giúp 10. His car (repair) ………………………………………… at this time yesterday. 11. This room (clean)……………………………………… by my sister every day. 12. ………….…..these toys (make)………………………………… in China? 13. These story books (write) ……………………….….……… by To Hoai in 1956. 14. Nam (award)………………………… a gold medal in the chess tournament last week. 15. Nothing (do)…………………………..…….. since Peter bought a computer last week. 16. His new novel (publish) ………………..………….……………in two months. 17. Nam doesn’t his motorbike today. It (repair) ………………………………………..right now. 18. A new supermarket (build)…………………………….…..…… in the neighborhood recently. 19. . If we recycle more, we (help) .. ………………………… the earth. 20. Factories (not dump)… ………………. waste into the rivers if the government fines them heavy. 21. If people travel to work by bus, there (be) ………………….…….. fewer cars fumes. 22. We will save thousands of trees if we (not waste)……………………….. paper. 23. If we use waste water carefully, more people (have)…………...…… fresh water. 24. If you (be)……………..…. the president, what ………………..you (do)……………….? 25. They get sick so often. If they (exercise)…………… more, they (be)……….. healthier. 26. If I (have)……………… one million US dollars, I (build)…………….. more parks in our city. 27. Ngoc’s mother is unhappy. If Ngoc (tidy)…….. her room every day, her mother (not be) …… so upset. 28. There isn’t a garden at our house. If there (be……….., we (grow)……………….…..vegetables. 29. It (not be)……………. possible to save the Earth if we (not take)…………action now 30. If the world temperatures (continue) ………………….to rise, there (be)……….less snow. 31. If I (be)……………. you, I (wear)…………………….earplugs when going to the concert. 32. If we (do)……………. nothing to stop global warming, we (see)……………. big changes in the future. 33. How………… you (travel) ………..…to work if you (not have)…………….. this motorbike? 34. Our garden is so beautiful . There (not be)…………………….any flowers if my sister (not take care)………………… of it every day. 35. If today (be) __________ Sunday, we (go) _____________ to your native village. 36. If she does not invite me to her birthday party, I (not go) _______________. 37. What __________you (do) __________ if you (be) ________________him? 38. If we send an invitation, our friends (come) _____________________to our party. 39. If you (press) __________________CTRL + S, you will save the file. 40. She will forget to pick you up if you (not phone) ____________________her. 41. If she had 5 pounds more, she (buy) ____________________ this T-shirt. 42. We would sell the bike for 20 Euros if Ron (repair) _________________ it.