【正文】
s difficult to breathe and the dust makes me ill. So if you want to go out, you39。ve ever been in. You just had to hope you39。(as a result)。(be caught)4. 困在了沙漠之中,于成純只能希望自己能活下來。(prevent……from)2. 聽到孩子的話,他們猛然意識到實際上國王沒穿衣服。m afraid they would not allow him ________ here.A. to smoke B. smoking C. smokes D. smoke5. Mother told me ________ the water before I drank it.A. boiling B. boiled C. boil D. to boil6. On my way home, I stopped _______ some food.A. buy B. to buy C. buying D. bought7. John was made _______ the car for a week as a punishment.A. to wash B. washing C. wash D. to be washing8. The sittingroom needs _______, but it39。t know whether and when ________ Shanghai in two days. (leave) is not sure how ________ out the maths problem. (work)Ex21. Don39。s wish is ________ a writer in the future. (bee)39。t have time ________ a rest. (to have)39。s time ________ our class. (start) have a lot of things ________ you. (tell)39。d better ________(stay) at home and ________ (do) your homework.39。s very kind of you ________ it for me. (do) job is ________ the students English. (teach) you want ________ with us, you should be ready by eight o39。t think it39。s strange, we know all this, and yet we do nothing but talk about it. I can39。s a terrible ( 19 )___________.David:Yes, and another problem is all the ( 20 )______that we produce. We burn a lot of garbage, and once again, the gases pollute the atmosphere. The situation couldn39。re going to say. We39。re (14)_________right. Carbon dioxide is the gas that does most ( 15)_________to the atmosphere. But we have a problem with trees too. You see, trees give out ( 16 )_________ and ( 17)___________ carbon dioxide. So they39。s