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The house could fall down soon if no one some quick repair work． [ ] A． has done

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The house could fall down soon if no one some quick repair work． [ ] A． has done

The house could fall down soon if no one ________ some quick repair work．

[]A．

has done

B．

is doing

C．

does

D．

had done

试题答案

答案：C

解析：

主句用一般将来时时态时，条件状语从句用一般现在时时态。

标签：ifsoononenodown

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