问题
选择题
—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．wi
ll take part in; is
D．takes part in; will be
答案
答案：C
考查if引导的宾语从句及条件状语从句的用法。问句是由if引导的宾语从句，时间状语为 tomorrow，故用一般将来时；答语是由if引导的条件状语从句，主句用将来时，从句用一般现在时，故选C。