题目内容
13. (2015山东莱芜莱城高庄中学期中) As we all know,it’s not polite to keep others for a long time.
A. wait B. waited C. to wait D. waiting
13.D keep sb. doing sth.意为“让某人一直做某事”,是固定用法
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13. (2015山东莱芜莱城高庄中学期中) As we all know,it’s not polite to keep others for a long time.
A. wait B. waited C. to wait D. waiting
13.D keep sb. doing sth.意为“让某人一直做某事”,是固定用法