题目内容
They have had a long and bitter struggle _____their living conditions.
A. to improving B. for improving C. to improve D. improve
C
解析:
不定式常修饰动词状语,表示行为的目的、结果、原因等。for+动名词一般不做目的状语,但for+名词化了的动名词可作原因状语
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题目内容
They have had a long and bitter struggle _____their living conditions.
A. to improving B. for improving C. to improve D. improve
C
不定式常修饰动词状语,表示行为的目的、结果、原因等。for+动名词一般不做目的状语,但for+名词化了的动名词可作原因状语