问题
选择题
— 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
答案：B
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。