Ex:Give the correct form of the verbs:
1. The man (sit) next to me was very old.
2. She has a lot of novels (write) in English.
3. Would you mind if I (turn) on the computer?
4. Tom doesn’t enjoy (laugh) at by other people.
5. Would you mind (leave) us alone?
6. Do you mind if I (turn) off the computer?
7. The price of oil  (fall)  rapidly since April.
8. The woman (sing) is my grandmother.
9. Julie and Mark (sit) on a bench by the sea now.
10. My mother gave me a bottle of perfume (make) in France.