20．-Peter.where did you guys go for the summer vacation?-We busy with our work for months.so——青夏教育精英家教网——

20．-Peter，where did you guys go for the summer vacation？
-We________ busy with our work for months，so we went to the beach to relax ourselves．（　　）

19．Do you think their table tennis team will win the first place at the coming Asian Games？_________．Ours is much stronger than theirs．（　　）

	A．	Of course		B．	It depends
	C．	Don't mention it		D．	By no means

18．The experiment has_________ the possibility of the existence of any life on that planet，but it does not mean there is no life on other planets．（　　）

17．Tim is in good shape physically he doesn't get much exercise．（　　）

16．I was just going to cut my rose bushes but someone it．Was it you？（　　）

15．It's said that they have swum to the island from the continent，but theycouldn't have done it（不可能做到）because the ocean in between is too wide．（do）

14．My mother was so proud of all（that） I had done（我所做的）that she rewarded me with a trip to Beijing．（do）

13．Only if people of a11 the countries are unitedcan we solve/will we be able to solve（我们才能解决）the existing problems in the world．（solve）

12．Had she ___________ her promise，she would have made it to Yale University．（　　）

11．By the time Jack returned home from England，his son， from college．（　　）

	A．	graduated		B．	has graduated
	C．	had been graduating		D．	had graduated

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