Question

4. It，s rather hot in the room. You'd  better_the windows or the door.

A.close B.not to close C.don't close D.not  close

Answer 1

4. D had better意为"最好"，后接动词原形，否定式是在动词 原形前加not;由"房间里确实很热"推知题干后一句的意思 为"你最好不要关窗和门"，表示"最好不要关……"，用had better not close."。