问题：
–Mary, could you tell me if your mother _____ our school sports meeting tomorrow?
--I think she will come to school if she _____ free.
A．will take part in, will be
B．takes part in, is`
C．will take part in, is
D．takes part in, will be
–Mary, could you tell me if your mother _____ our school sports meeting tomorrow?
--I think she will come to school if she _____ free.
--I think she will come to school if she _____ free.
| A．will take part in, will be | B．takes part in, is` |
| C．will take part in, is | D．takes part in, will be |
参考答案：