Question

【题目】You'd better ________ so late at night. It's bad for your health.
A.not stay up
B.not to stay up
C.no staying up

Answer 1

【答案】A
【解析】句意：你最好不要在晚上待到很晚。对你的健康不好。You'd better+动词原形，表示你最好做某事；You'd better+not+动词的原形，表示你最好不要做某事。根据题意，故选A。