Question

You had better _____ talk in class without permission.

A．not

B．don’t

C．no

D．/

Answer 1

A

试题分析： 句意：未经允许，你最好不要在课堂上说话。had better do sth是固定搭配，意为最好做某事，其否定形式为，had better not do sth,结合题意，故选A。