I’m very sorry to keep you for a long timeA. waitB. waitsC. waitingD. to wait

发布时间：2020-08-20 09:33:06

I’m very sorry to keep you      for a long time
A. wait
B. waits
C. waiting
D. to wait

网友回答

A. wait
B. waits
(答案→)C. waiting
D. to wait
解析：考查固定用法。keep sb. doing sth.“让某人一直做某事”。句意“让你等这么久真是抱歉。”故选C。
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