—Mary,couldyoutellmeifyourmother

问题详情：

—Mary, could you tell me if your mother _______ our school meeting tomorrow?

  —I think she will come to school if she ______ free.

  take part in; will be       s part in; is

  take part in; is           s part in; will be      

【回答】

C

知识点：动词时态

题型：选择题