Question

You have worked for a long time. You ____________ be very tired. &...

You have worked for a long time. You ____________ be very tired. A．must B．can’t C．could D．mustn’t

Answer 1

A

试题分析：句意：你已经工作很久了。你一定很累。Must必须；can’t不能，不会，不可能；could能。会；mustn’t禁止，不允许。表示肯定的推测常用must be，所以选A。