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In such dry weather, the folwers will have to be watered if

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In such dry weather, the folwers will have to be watered if they
_____.
A have survive
B would survive
C will survive
D are to survive
别上网复制别人的,
为什么选C不可以,是虚拟诺
可是答案是选D ?!
一楼答非所问啊。。
In such dry weather, the folwers will have to be watered if
改啦
就是D
C the folwers will have to be watered if they
将来时在前 IF在后
IF接条件状语从句,用一般现在时!
还是建议问老师吧 这是最好的选择