问题补充:
— Has Tim started? He said he would join in the party.
— He .He is a man of keeping his word.
A. could have left
B. must have left
C. can’t come
D. won’t be coming
答案:
A. could have left
(答案→)B. must have left
C. can’t come
D. won’t be coming
解析:考察情态动词。“Tim出发了吗?他说他要参加晚会。”“他肯定已经出发了。他是一个遵守诺言的人。”A.could have left过去可能 B must have left 过去肯定答案B。