I __work out the maths problem.Lily____know the answer.Let's ask her for help.[ ]A.can'tmu

题目简介

I __work out the maths problem.Lily____know the answer.Let's ask her for help.[ ]A.can'tmu

题目详情

I __work out the maths problem.Lily____know the answer.Let's ask her for help.
[     ]
A.can't  must
B.can't  may
C.may not ,  has to
D.have to ,can
题型:单选题难度:中档来源:同步题

答案

A

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