1. I ______ him since we were children. (State: Knowledge) have known
a) have known
b) have been knowing [Ich kenne ihn, seit wir Kinder waren.]

2. She ______ about the problem all morning. (Action: Thinking) has been thinking
a) has thought
b) has been thinking [Sie denkt schon den ganzen Morgen über das Problem nach.]

3. He ______ in ghosts all his life. (State: Belief) has always believed
a) has always believed
b) has always been believing [Er hat sein ganzes Leben lang an Gespenster geglaubt.]

4. They ______ the instructions for half an hour. (Action: Reading) have been reading
a) have read
b) have been reading [Sie lesen seit einer halben Stunde die Anweisungen.]

5. I ______ the answer now. (State: Understanding) have understood
a) have understood
b) have been understanding [Ich habe die Antwort jetzt verstanden.]

6. We ______ this grammar point since nine o’clock. (Action: Practising) have been practising
a) have practised
b) have been practising [Wir üben diesen Grammatikpunkt seit neun Uhr.]

7. I ______ your name! (State: Memory) have forgotten
a) have forgotten
b) have been forgetting [Ich habe deinen Namen vergessen!]

8. He ______ for the right answer all afternoon. (Action: Searching mentally) has been looking
a) has looked
b) has been looking [Er sucht den ganzen Nachmittag nach der richtigen Antwort.]

9. She ______ that she was wrong. (State: Realization) has finally realized
a) has finally realized
b) has finally been realizing [Sie hat endlich eingesehen, dass sie im Unrecht war.]

10. They ______ the question for twenty minutes. (Action: Discussing) have been discussing
a) have discussed
b) have been discussing [Sie diskutieren seit zwanzig Minuten die Frage.]

11. We ______ with you on this point. (State: Opinion) have always agreed
a) have always agreed
b) have always been agreeing [Wir haben dir in diesem Punkt immer zugestimmt.]

12. I ______ this new method for a few weeks. (Action: Trying) have been trying
a) have tried
b) have been trying [Ich probiere diese neue Methode seit ein paar Wochen aus.]

13. How long ______ the truth? (State: Knowledge) have you known
a) have you known
b) have you been knowing [Wie lange kennst du die Wahrheit schon?]

14. She ______ notes since the lesson started. (Action: Writing) has been writing
a) has written
b) has been writing [Sie macht Notizen, seit die Stunde begonnen hat.]

15. I ______ what you are saying. (State: Understanding) have understood
a) have understood
b) have been understanding [Ich habe verstanden, was du sagst.]

16. He ______ for his exam all week. (Action: Studying) has been studying
a) has studied
b) has been studying [Er lernt die ganze Woche für seine Prüfung.]

17. He ______ that story for years. (State: Memory) has remembered
a) has remembered
b) has been remembering [Er hat sich jahrelang an diese Geschichte erinnert.]

18. They ______ the same mistake again and again. (Action: Repeating) have been making
a) have made
b) have been making [Sie machen immer wieder denselben Fehler.]

19. I ______ that he was a good man. (State: Belief) have always thought
a) have always thought
b) have always been thinking [Ich habe schon immer gedacht, dass er ein guter Mann ist.]

20. We ______ about his idea since lunch. (Action: Talking) have been talking
a) have talked
b) have been talking [Wir sprechen seit dem Mittagessen über seine Idee.]

21. I ______ her for a very long time. (State: Knowledge) have known
a) have known
b) have been knowing [Ich kenne sie schon sehr lange.]

22. The students ______ questions for the last ten minutes. (Action: Asking) have been asking
a) have asked
b) have been asking [Die Schüler stellen seit zehn Minuten Fragen.]

23. We ______ the importance of exercise. (State: Realization) have realized
a) have realized
b) have been realizing [Wir haben die Wichtigkeit von Sport erkannt.]

24. She ______ the presentation since this morning. (Action: Preparing) has been preparing
a) has prepared
b) has been preparing [Sie bereitet seit heute Morgen die Präsentation vor.]

25. They ______ their promise. (State: Memory) have not forgotten
a) have not forgotten
b) have not been forgetting [Sie haben ihr Versprechen nicht vergessen.]

1. I ______ him since we were children. (State: Knowledge) have known
a) have known
b) have been knowing [Ich kenne ihn, seit wir Kinder waren.]

2. He ______ in ghosts all his life. (State: Belief) has always believed
a) has always believed
b) has always been believing [Er hat sein ganzes Leben lang an Gespenster geglaubt.]

3. I ______ the answer now. (State: Understanding) have understood
a) have understood
b) have been understanding [Ich habe die Antwort jetzt verstanden.]

4. They have been meaning to help us since the beginning. (State: Intent – See footnote 1 below) have been meaning
 a) have meant
 b) have been meaning [Sie hatten von Anfang an die Absicht, uns zu helfen.]

5. I ______ your name! (State: Memory) have forgotten
a) have forgotten
b) have been forgetting [Ich habe deinen Namen vergessen!]

6. She ______ that she was wrong. (State: Realization) has finally realized
a) has finally realized
b) has finally been realizing [Sie hat endlich eingesehen, dass sie im Unrecht war.]

7. We ______ with you on this point. (State: Opinion) have always agreed
a) have always agreed
b) have always been agreeing [Wir haben dir in diesem Punkt immer zugestimmt.]

8. How long ______ the truth? (State: Knowledge) have you known
a) have you known
b) have you been knowing [Wie lange kennst du die Wahrheit schon?]

9. I ______ what you are saying. (State: Understanding) have understood
a) have understood
b) have been understanding [Ich habe verstanden, was du sagst.]

10. He ______ that story for years. (State: Memory) has remembered
a) has remembered
b) has been remembering [Er hat sich jahrelang an diese Geschichte erinnert.]

11. I ______ that he was a good man. (State: Belief) have always thought
a) have always thought
b) have always been thinking [Ich habe schon immer gedacht, dass er ein guter Mann ist.]

12. They ______ any of the details. (State: Memory) have not remembered
a) have not remembered
b) have not been remembering [Sie haben sich an keines der Details erinnert.]

13. I ______ her for a very long time. (State: Knowledge) have known
a) have known
b) have been knowing [Ich kenne sie schon sehr lange.]

14. We ______ the importance of exercise. (State: Realization) have realized
a) have realized
b) have been realizing [Wir haben die Wichtigkeit von Sport erkannt.]

15. She ______ about the problem before. (State: Opinion) has thought
a) has thought
b) has been thinking [Sie hat schon früher über das Problem nachgedacht.]

16. I did not know that you were here. (State: Knowledge – See footnote 2 below) did not know
a) did not know
b) have not known [Ich habe nicht gewusst, dass du hier bist.]

17. He ______ the recipe perfectly. (State: Memory) has remembered
a) has remembered
b) has been remembering [Er hat sich das Rezept perfekt gemerkt.]

18. They ______ why the door was locked. (State: Understanding) have understood
a) have understood
b) have been understanding [Sie haben verstanden, warum die Tür verschlossen war.]

19. I ______ that for a second. (State: Belief) have doubted
a) have doubted
b) have been doubting [Ich habe das für eine Sekunde bezweifelt.]

20. You ______ your keys again! (State: Memory failure) have forgotten
a) have forgotten
b) have been forgetting [Du hast schon wieder deine Schlüssel vergessen!]

21. We ______ in the same thing since 2010. (State: Belief) have believed
a) have believed
b) have been believing [Wir glauben seit 2010 an dieselbe Sache.]

22. I ______ your advice. (State: Understanding) have understood
a) have understood
b) have been understanding [Ich habe deinen Rat verstanden.]

23. She ______ my phone number. (State: Memory) has remembered
a) has remembered
b) has been remembering [Sie hat sich an meine Telefonnummer erinnert.]

24. I ______ what that word means. (State: Knowledge) have never known
a) have never known
b) have never been knowing [Ich habe nie gewusst, was dieses Wort bedeutet.]

25. They ______ their promise. (State: Memory) have not forgotten
a) have not forgotten
b) have not been forgetting [Sie haben ihr Versprechen nicht vergessen.]