－Whereismysister,mum?Ihaven’tseenherthismorning.   －She...

问题详情：

－Where is my sister, mum? I haven’t seen her this morning.

    －She _______ to the library.

    A. has been     B. is going     C. has gone    D. will go

【回答】

C

知识点：动词时态

题型：选择题