(2013·北京，35)—You needn't take an umbrella.It isn't going to rain.
—Well, I don't know.It do.
A. might
B. need
C. would
D. should
网友回答
(答案→)A. might
B. need
C. would
D. should
解析：
考查情态动词。第一个人说不会下雨，第二个人回答I don't know，因此可知，到底下不下雨是不能肯定的事情，故使用might表推测“有可能”。