I had a really hard time studying science this term.A．toB．withC．inD．on 题目和参考答案——青夏教育精英家教网——

题目内容

I had a really hard time _____studying science this term.

A．to

B．with

C．in

D．on

C

表示在什么上很辛苦可用have a hard time（in）doing sth，故本题选C。

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