1. Everyday, Quang (spend).....spends............... most of his free time looking after the garden
     2. I (finish)..have finished................ my homeword since yesterday
     3. All chemicals and drugs must (put)......be put................. into locked cupboards
     4. Would you mind (sit)...........sitiing................ in the front seat of the taxi?
     5. I'd like (come).............to come............... and visit you next summer
     6. He was( heavy).......heavily..................... fined for dropping litter in piblic places
     7. Scientists say that exhaust fumes are (poison) ..............poisoning........... our city
     8. It's (convenience)..............convenient................. to send a letter from my village because the nearest post office is miles away