Question

–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

Answer 1

C

第一句中，if 引導(dǎo)的是賓語從句，因此從句根據(jù)自己的時(shí)態(tài)需要決定，根據(jù)意思第一空用將來時(shí)，而后一句中if 引導(dǎo)的是條件狀語從句，在if 引導(dǎo)的條件狀語從句中如果主句為一般將來時(shí)，從句用一般現(xiàn)在時(shí)代替將來時(shí)，故選C