ex. 1.
1.Have you ever flown in a helicopter?
2.She has never eaten octopus.
3.Have they ever been late for work?
4.We have never seen a Tarantino film .
5.She has written more than ten mystery novels.
6.I haven't read The lord of the rings.
7.Have you ever worked in a clothes shop?
8.He has won three gold medals.
9.They haven't lost a match this year.
10.I have heard three of their albums.
ex .2
1.had
2.studied
3.been
4.spoken
5.met
6.left
7.failed
8.sent
9.sung
10.had
11.seen
ex. 3
1.- Have you ever heard?
-No , i haven't
-I saw them in concert last night.
-Was it a good concert?
-Yes , I really liked it

2.-Have you ever lost your car keys ?
-Yes , i have .
-When did that happen?
-In Portugal. I was there on holiday.
-What did you do ?
-I phoned the car hire company. But they made me pay. ..