问题
选择题
--- 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
答案：D
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。