问题
选择题
You __ drive your car so fast. It's very dangerous.
A．wouldn't
B．shouldn't
C．couldn't
D．mightn't
答案
答案：B
情态动词之间最大的区别就是表达语气的不同. wouldn't不会;shouldn't不应该;couldn't不能; mightn't不可能,表示否定性推测.句意:你不应该开车这么快.太危险了.结合语境可知选B.