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This problem may lead to more serious ones if ______ unsolved.

A．making           B．remained          C．keeping           D．left

 

【答案】

D

【解析】

試題分析：考查狀語從句的省略：主從句的主語一致的時候，可省略從句的主語和be動詞，這題的四個選項都是省略式，用了不同的動詞，A項的make和this problem是被動關系，應該是made，B項的remain是連系動詞，沒有被動式，C項的keep和this problem也是被動關系，應該是過去分詞，D項填left="if" this problem is left unsolved。句意：如果這個問題任由不解決，就會導致更加嚴重的問題，選D。

考點：考查狀語從句的省略

點評：當狀語從句的主語與主句的主語一致，且狀語從句中有系動詞be的時候，可以把狀語從句的主語和be動詞一起省略。如果狀語從句中有it is的時候，it is 也可以省略。

 

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