问题补充:
— Li Lin hasn’t turned up yet, but he promised to come to the party.
— He home. He is a man of keeping his word.
A. can’t leave
B. won’t be leaving
C. could have left
D. must have left
答案:
A. can’t leave
B. won’t be leaving
C. could have left
(答案→)D. must have left
解析:句意:——李林还没来,但他答应过要来参加聚会的。——他肯定已经从家里出来了。他可是个信守诺言的人。从He is a man of keeping his word中可以看出,李林肯定已经出发来参加我们的晚会,这是对已发生的事肯定的推测,故用情态动词完成式。注意must用作推测意义时,不能用于否定式和疑问句。can’t leave肯定没有离开;won’t be leaving将不愿意离开;could have left本来可以离开的。