Question

—You’d better ______ work too hard like this.

—I see. You mean working too hard makes one tired and ill.

A．not

B．not to

C．don’t

D．won’t

Answer

A

【解析】此题考查固定句型结构had better do sth表示最好做某事，其否定结构是had better not do sth表示最好不要做某事，故选A。