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-- I wonder why he left without a word.( )-- He ______ some trouble for he looks dull.

A、could have had

B、should have had

C、can have had

D、must have had

时间：2021-07-17 23:14 关键词： 临床医学 专升本 英语2 医学影像学 护理学 大学英语2（专升本）

答案解析

D