问题
选择题
—I’m thinking of losing weight these days.
—Oh, you_______be out of your mind. You’re 50 kilograms at the most!
A．will
B．should
C．may
D．must
答案
答案：D
选D。本题考查情态动词的用法。由下句“you’re 50 kilograms at the most”可以推断出来，由此可知，“你还减肥，你肯定是(must be)疯了。”