20．当暴风雨在外面发生时.不要站在大树下．Don'tstand under the tree with the serious stormhappening outside．——青夏教育精英家教网——

20．当暴风雨在外面发生时，不要站在大树下．（happen）
Don'tstand under the tree with the serious stormhappening outside．

19．孩子们应该有时间放松和独立思考．（think）
Kids should have time to ralax andthink for themselves．

18．过了一会儿，风开始减弱．（die）
After a while，the wind beganto die down．

17．你最好不要把争论变成战争．（turn）
You'd betternot turn the discussioninto fight．

16．我们应该尽力寻找更好的解决这个问题的方法．（solve）
We should try to find a better wayto solve this problem．

15．你没有必要和别人竞争来取得好成绩．（need）
There is no need for you to compete to others to get good grades．

14．Please don't make again．Sorry，I won't．（　　）

	A．	bad something happen		B．	something bad happening
	C．	something bad happen		D．	bad something happening

13．Would you please give this newly-published novel to Tom？
Certainly， he comes back．（　　）

12．Sam，what are the advantages of MP5players？
They are smaller and lighter they can be carried easily．（　　）

11．How are you your classmates？Quite well．（　　）

	A．	get on with		B．	getting on with
	C．	get on well with		D．	getting on well with

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