пожалуйстааа помогитеее заранеее спасибо

1. A: How long have you been here?

B: I have been here for three o'clock this afternoon.

2. Yenlik and Madina haven't played tennis since last Saturday.

3. I haven't seen Joanna since she came back from London.

4. I have known Peter for three years.

5. Iskander has written three books since he moved to Paris.

6. Mary hasn't spoken to Amanda for two months.