—Show me your permit, please.
—Oh, it's not in my pocket. It ________.
A.must have fallen out
B.might fall out
C.could fall out
D.should have fallen out
答案:A
A 考察情态动词。句义:请给我看你的准入证。哦!证件不在我的口袋里,肯定掉了。Must have done表示对过去事情的肯定推测。意为:一定做了某事。故A正确。
—Show me your permit, please.
—Oh, it's not in my pocket. It ________.
A.must have fallen out
B.might fall out
C.could fall out
D.should have fallen out
答案:A
A 考察情态动词。句义:请给我看你的准入证。哦!证件不在我的口袋里,肯定掉了。Must have done表示对过去事情的肯定推测。意为:一定做了某事。故A正确。