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In such dry weather, the flowers will have to be watered if they [ ] A.have surv

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In such dry weather, the flowers will have to be watered if they [ ] A.have surv

In such dry weather, the flowers will have to be watered if they ________

[]

A.have survivedB.are to surviveC.would surviveD.will survive

试题答案

答案:B

解析:

前面的主句使用了一般将来时,后面if引导的条件句不能使用将来时,此处使用“be+不定式”,指隐藏在未来之中的事。