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, we'll build another railroad in this area. [ ] A. If possible B. If not C. If

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, we'll build another railroad in this area. [ ] A. If possible B. If not C. If

________, we'll build another railroad in this area.

[]

A. If possible

B. If not

C. If it will be possible

D. If we are possible

试题答案

答案:A

提示:

if it is possible从句中主语为it,谓语中带有be,故省略主语 it 和 be 动词.