giúp em với ạ em chỉ còn nốt 40 điểm nữa thôi ạ em cần trc 6h ạ mong anh chị giúp em ạ 2. reduce b. to give something to someone in exchange for something else 3. recycle c. to use something again 4. save d. to make something start working 5. wrap e. to make something less 6. swap f. to cover something completely in paper 7. turn on g. to make something stop working 8. turn off h. to treat waste materials so that they can be used again II. Put the verbs in brackets into the correct form. 1. We ____________ (stay) at home if it rains. 2. She will call you if she ____________ (have) time. 3. If it _________ (not rain) tomorrow, we will go for a picnic. 4. If everyone _______(recycle) paper, metal and glass, we _____ (not produce) so much rubbish. 5. If you ________ (not water) plants, they ________ (die). 6. If the weather __________ (be) bad, we ________ (not go) to the park. 7. We _____ (save) thousands of trees if we _______ (not waste) so much paper. 8. What _______ (happen) if we _______ (keep) polluting the environment. 9. If we ________ (not stop) cutting down so many trees, we ______ (endanger) our oxygen supply. 10. If people ________ (dump) chemicals into rivers, they _______ (not be) able to swim in them in the future. . 1. If someone came into the store, smile and say, “May I help you?” A B C D 2. If you try these cosmetics, you look five years younger. A B C D 3. If you do not understand what were written in the book, you could ask Mr. Pike. A B C D 4. I will come to meet Mr. Pike and tell him about your problems if you didn’t solve A B C D them yourself. 5. Sam will not graduate unless he doesn’t pass all the tests. A B C D 6. If there isn’t enough food, we couldn’t continue our journey. A B C D 7. Unless you pour oil on water, it will float. A B C D 8. You have to take a taxi home if you want to leave now. A B C D 9. If anyone will phone, tell them I’ll be back at 11:00. A B C D 10. We can hire a mini bus if there will be enough people. A B C D