3．-Sorry.Professor Smith．I didn't finish the assignment yesterday．-Oh.you have done it as yesterd——青夏教育精英家教网——

3．-Sorry，Professor Smith．I didn't finish the assignment yesterday．
-Oh，you have done it as yesterday was the deadline．（　　）

2．Every few years，the coal workers their lungs X-rayed to ensure their health．（　　）

1．"You __ have a wrong number，"she said．"There's no one of that name here．"（　　）

20．After that，he knew he could __ any emergency by doing what he could to the best of his ability．（　　）

19．Had I known about this computer program，a huge amount of time and energy __．（　　）

	A．	would have been saved		B．	had been saved
	C．	will be saved		D．	was saved

18．I have been convinced that the print media are usually more __ and more reliable than television．（　　）

17．--How about camping this weekend，just for a change？
--OK，__ you want．（　　）

16．As a new graduate，he doesn't know it takes to start a business here．（　　）

15．Joining the firm as a clerk，he got rapid promotion，and as a manager．（　　）

14．Mark have hurried．After driving at top speed．he arrived half an hour early．（　　）

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