问题
选择题
Such a good opportunity may not come again, so you ____________ let it go this time.
A．hadn’t better
B．wouldn’t better
C．would better not
D．had better not
答案
答案：D
考察虚拟语气. had better相当与一个助动词,它的后面要跟动词原形它的否定式是在它后面加not:没有would better这种说法.句意:这样的好机会不会再出现了,因此你不能让它溜走.故选D.