问题
选择题
.—What’s the matter with the man hanging his head there?
—Well, if you _______ know, he was caught stealing my bike.
A.must
B.may
C.can
D.shall
答案
答案:A
考查情态动词must的用法,这里表示“偏要”,句意:--那边低着头的男子怎么了?--如果你偏要知道的话,他被抓住偷我的自行车。选A。