题目内容
【题目】I am used to ________ my hair in the morning.
A. wash B. washes C. washing D. washed
【答案】C
【解析】句意:我习惯于在早上洗头。A. wash动词原形形式;B. washes动词三人称单数形式;C. washing动名词形式;D. washed过去式形式。习惯于做某事:be used to doing sth,本结构中to是介词,后跟动词时用成动名词(-ing)形式。故选C。

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