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

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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
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

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
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.

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

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