Jack could have avoided that terrible car accident, but he careful enough.A．is notB．hasn’t been C．was notD．hadn’t been 题目和参考答案——青夏教育精英家教网—

题目内容

Jack could have avoided that terrible car accident, but he ________ careful enough.

A．is not

B．hasn’t been

C．was not

D．hadn’t been

解析这题考查时态，句意是：杰克本来可以避免这场可怕的车祸，但是他太不仔细了。从could have done看出是“过去本可以做…却没有做”，那不够仔细是过去的事实，所以选C

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My friend has large police dog, Jack．Every Sunday	1．________
afternoon when my friend takes Jack for a long walk in	2．________
the park．A Sunday afternoon a young man came to	3．________
visit my friend．He stayed a long time．Soon it	4．________
is time for my friend to take Jack for his walk．	5．________
So the visitor still stayed．Jack became very	6．________
worrying about his walk in the park．He walked	7．________
around the room several time．But the visitor went	8．________
times on to talking．Finally Jack could not stand(忍受)	9．________
it any long．He went out of the room and came back with the visitor’s hat in his mouth．	10．________

—Jack, could I use your laptop for a while?

—___________. Go ahead, please.

A. With pleasure B. No way C. By all means D. Come on

5. —Jack, could I use your laptop for a while?

—_________. Go ahead, please.

A．With pleasure

B．No way

C．By all means

D．Come on

A. is not B. hasn’t been C. was not D. hadn’t been

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