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35. A. However
Put the verbs in the blanks in the correct form to complete the following sentence.
36. If Nam(do) __________ a cooking course, he can make his favourite food at home.
37. If you (have) __________ a bad day today, you should do your best to get through it.
38. If people (not care) __________ the environment, they will keep making it worse.
39. If you (not join) __________ the tribal dances, you will have many other traditional games.
40. She can go home early if she (finish) __________ all her work.
Make sentences using the words and phrases given.
41. Nowadays/ teenagers/ good/ technology / than / past. ____________________________
42. If you / spend / much / time / computer, you / get/ eyes pain. ____________________________
43. If you/ sit/ front / computer / all day /, it / cause / health / problems. ____________________________
44. If / students/ have / coming exam/, they should / not / wait / study / until / the day / before/. ____________________________
45. If / Phan Thi Nhung / convert / my document, / it / not / be / correct. ____________________________

Rewrite the following sentences by using the word in the (...) that best combines each pair of sentences.
46. If you eat an apple a day, you will stay healthy. ____________________________ (Unless)
47. A teenager will run out of money if he doesn’t stop wasting it. ____________________________ (Unless)
48. James will not pass the test unless he studies harder. ____________________________ (IF)
49. My brother won’t go travelling this summer if he doesn’t stay healthy. ____________________________ (Unless)
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