My roommate Tom has a great deal of trouble______(跟的上班上的其他同学).keeping up with th

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问题 My roommate Tom has a great deal of trouble______(跟的上班上的其他同学).

选项

答案 keeping up with the rest of the class

解析 have trouble之后接动词的话要用该动词的动名词形式；“跟得上某人”用固定短语keep up with sb．。

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