If it Adoesn’t rain Bwithin the next few weeks, the Ccrops will have to be watered if they are Dto be survived.

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问题 If it Adoesn’t rain Bwithin the next few weeks, the Ccrops will have to be watered if they are Dto be survived.

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答案D

解析 改为to survive。survive生存,存活,是不及物动词,没有被动语态。
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