Question

【题目】Be careful! The ice is not thick enough. You'd better ________ on it.

A. skate B. not to skate

C. not skate D. not skating

Answer 1

【答案】C

【解析】

句意：小心。这儿的冰不足够厚，你最好不要在上面滑。这里用的是had better do sth,其否定是had better not do sth, had better 是情态动词，所以后要跟动词原形，故选C。