问题补充:
--- I’ll tell Mary about our changes tomorrow.
--- What? You her yesterday.
A. ought to tell
B. must have told
C. might have told
D. should have told
答案:
A. ought to tell
B. must have told
C. might have told
(答案→)D. should have told
解析:考查情态动词。句中考查should have done本应当做。句意:——我将告诉玛丽我们明天的改变。——什么?你本应当昨天告诉她了。