英语单选1.一When shall we restart our business?一Not until we ___o

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英语单选
1.一When shall we restart our business?一Not until we ___our plan．
A．will finish B．are finishing
C．are to finish D．have finished
2.It rained heavily in the south ,___serious flooding in several provinces.
A.caused B.having caused
C.causing D.to cause

1.D
答语为省略,补充为：
Not until we have finished our plan.
= We shall not restart our business until we have finished our plan.
根据状语从句时态的“主将从现”原则,until引导的时间状语从句一般使用一般现在时或现在完成时.
而AC都是一般将来时,排除；
B为现在进行时或一般将来时,排除.
2.C
逗号前后无类似于and/so之类的并列连词,所以后面为状语,而非并列句/并列谓语.
从句意来看,后面是结果状语.
而引导结果状语的一般只有两种：现在分词或不定式.
A表示被动（it和cause之间）或并列的谓语（与rained并列,但是无连词连接）,但是显然it和cause之间为主动关系,且也不可能为并列谓语；
现在分词做结果状语,表示顺其自然的结果（即由主句动作可以顺气自然推理出来的结果）.而不定式做结果状语,表示出乎意料的结果.
如：I returned home,(only) to find my house broken into.
根据句意,明显为前者,排除D.
B表示cause动作发生在谓语动词rained之前,不符合逻辑,排除.
所以正确答案为C.

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