1.I (do) … …….….. my homework while Nick (watch)…… …. TV last night.  2.Unless they (pass) …….. their examinations, they would join the army.  3.What …… ….(you /do) … …. at 8 p.m yesterday?  4. If we had the key now, we (solve) … …. the problem of traffic jam. 5. Stop (argue) …… ……..…… and start (work)…… …..……..  6. Don’t try (persuade) …… …………. me. Nothing can make me (change) ……… my mind 7. If we recycle more, we (help) … ……… the Earth. 8. If you (be) … ….. ….. the president, what you (do) … ………………. to help the environment? 9. My father (work) …… …….…. in this factory for many years. 10. After she (finish) ………. breakfast, she left the house. 11. Look at those clouds – I think it (rain)…… …….…….. 12. This time next week, I (lie)…… …… on the beach on Phu Quoc Island

1.I (do) … …was doing ….….. my homework while Nick (watch)……was watching …. TV last night.
 2.Unless they (pass) …passed….. their examinations, they would join the army.

 3.What ……were ….(you /do) … doing…. at 8 p.m yesterday? 

4. If we had the key now, we (solve) …would solve …. the problem of traffic jam.
5. Stop (argue) ……arguing ……..…… and start (work)…… …..…….. 
6. Don’t try (persuade) ……to persuade……. me. Nothing can make me (change) …change…… my mind
7. If we recycle more, we (help) … will help……… the Earth.
8. If you (be) … …were.. ….. the president, what would you (do) … ……do…………. to help the environment?
9. My father (work) …… has worked…….…. in this factory for many years.
10. After she (finish) …had finished……. breakfast, she left the house.
11. Look at those clouds – I think it (rain)…… is going to rain / will rain…….……..
12. This time next week, I (lie)……will be lying…… on the beach on Phu Quoc Island