----There's someone at the door.Who____ it be Is it the postman?----No,It _____be him.It's just 7 o'clock.It' too earlyA can; can't B will won't C may mustn't D may not ; must

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----There''ssomeoneatthedoor.Who____itbeIsitthepostman?----No,It_____behim.It''sjust7o''clock.It''tooear

----There's someone at the door.Who____ it be Is it the postman?----No,It _____be him.It's just 7 o'clock.It' too earlyA can; can't B will won't C may mustn't D may not ; must
----There's someone at the door.Who____ it be Is it the postman?
----No,It _____be him.It's just 7 o'clock.It' too early
A can; can't B will won't C may mustn't D may not ; must

----There's someone at the door.Who____ it be Is it the postman?----No,It _____be him.It's just 7 o'clock.It' too earlyA can; can't B will won't C may mustn't D may not ; must
答案:A
翻译:
--门口有个人,会是谁了?是邮递员吗?
--不,不可能是他.现在才7点,还早了.
can't 表示否定的推测,表示“肯定不是,一定不是”.而must 表示“必须,肯定”的意思.may 表示“可能,可以”,will 表示“将要”.所以正确答案是A.

A,can可能,用于推测,用在疑问句和否定句中。

c
--有人敲门,会是谁呢?是邮差吗?
不,不可能是他,才7点,太早了

A