1 Put the verbs in brackets into the presentperfect,

1 Put the verbs in brackets into the present
perfect, as in the example.
1 A: Why don't you stay at home and finish your
homework?
B: I have already finished (already/finish) it.
2 A: How long
(they/know) each other?
B: For more than ten years.
3 A:
(you/see)
Carl lately?
B: No, 1
(not/See)
him since August
4 A
(Mike/ride)
a motorcycle before?
B: No, he hasn't
5 A:
(you/book)
the plane tickets yet?
B: Yes, here they are.
(print) them, too!
6 A Do you have Shirley's phone number?
B: I did have, but I think she .
(change) it again!