() There ___ anyone in the office now because there is no answer to the phone.A can't be B musn't be
问题描述：
() There ___ anyone in the office now because there is no answer to the phone.
A can't be B musn't be
答
A
can't在这里表示推测，表示不可能
这是一个用法
mustn't表示绝对禁止，不许
答
A
在否定句或者疑问句中，表示语气较为确定的推测要用can
答
A