Use the correct tensen or form of the verbs in parentheses:
11. She suggest we...........by bike instead of by motorbike to save energy. (travel)
12. When it began to rain, the children .................in the yard. (play)
13. My father..............for the telephone company twenty years ago. (work)
14. We used .................in Dalat, but now we live in Ho Chi Minh City. (live)
15. The crowed shouted................when Zidane scored the first goal for the French team. (excite)
16. Huy Dat was............... in finding his lost bicycle, so he decided to buy a new one. (succeed)
17. His new car.....................a lot of fuel. (consumer)
18. Tsunami, earthquakes and typhoons are natural.......................(disastrous)
19. Their aim was to free women from domestic.....................(slave)
20. It would be more...................to turn off the air-conditioner before leaving (economy)