Ex8:
1. Have you studied
2. Have waited - hasn't come
2. Have lived
4. Has read - have you read
5. Hasn't been - has lived
6. Has gone - has never been
7. Have - slept - has rung
8. Has written - hasn't finished
9. Has lost - has looked
10. Have seen
Ex11:
1. Goes
2. Finished
3. Will buy
4. Do