you ____to be late for the meeting.It's important.A.should notB.must notC.had better notD.ought not而为什么不是B
问题描述：
you ____to be late for the meeting.It's important.
A.should not
B.must not
C.had better not
D.ought not
而为什么不是B
答
B must not是禁止的意思,语气太强,这个用不可以就好了,又后面接to
所以只能用ought not to
答
ought not to表示不应该=should not
must not是禁止的意思
再者，这些情态动词中，只有ought接动词不定式，所以只能是D
答
因为横线后有"to",ought to 是固定搭配,must 后面不跟"to"
用must的话应该是：
you must not be late for the meeting.