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The scientists did all they make the experiment a success. [ ] A. could B. can C

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The scientists did all they make the experiment a success. [ ] A. could B. can C

The scientists did all they ________ make the experiment a success.

[]A.

could

B.

can

C.

could to

D.

can to

试题答案

答案:C

提示:

all they could作did的宾语,不定式短语作目的状语。