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3. Fill in the sentences with the correct form of the verb in the Present Perfect.
1. We've already … (have) lunch.
2. They have …(begin) painting the living room.
3. We have … (keep) this secret for three years.
4. He has never … (drive) a motorbike before.
5. I have … (be) sick all week.
6. The birds have … (fly) south for the winter.
7. Don't worry, we haven't … (forget) about the meeting.
8. You have … (buy) a lot of clothes recently.
9. Have you … (choose) your university yet?
10. Have you ever … (drink) Turkish coffee?
11. She has … (know) about this problem for three months.
12. Why has John … (leave) already?