7) l have played ... the summer began.
8) We don't see ... but we saw ...
9) had an accident ... he broke ...
10) Have you finished typing? ... I have not finished yet ... begun
11) How many records have you brought? ... I have brought five records.
12) Have you ever found ...? No, l haven't.
13) Has Mr West sold...? Yes, he has.
He sold it last week. Has he moved to ...? He hasn't moved yet.