Give the correct form of the verb or the word in brackets:
1. Everyday, Quang (spend) ........................ most of his free time looking after the garden
2. I (finish).......................my homework since yesterday.
3.  All chemicals and drugs must (put)   ........................ into locked cupboards
4. Would you mind (sit)........................in the front scat of the taxi?
5. I’d like (come) ........................and visit you next summer
6. He was (heavy).....................fined for dropping litter in public places.
7. Scientists say that exhaust fumes arc (poison).................our city.
8. It’s (convenience)................to send a letter from my village because the nearest post office is miles away.