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The scientists on the new medicine for two years. They will succeed in no time. A. workB

时间:2019-02-02 15:55:22

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The scientists  on the new medicine for two years. They will succeed in no time. A. workB

问题补充:

The scientists on the new medicine for two years. They will succeed in no time.

A. work

B. are working

C. have worked

D. will work

答案:

A. work

B. are working

(答案→)C. have worked

D. will work

解析:

试题分析: 句意:科学家们已经研制这个新药两年了,他们马上就要成功了。 in no time马上;根据for

two years两年,可知时态为现在完成时,故选C.

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