Question

Frank _____ to see his grandma if he _____ free tomorrow.

A．will come ; will be

B．comes ; is

C．will come ; is

D．is; come

Answer 1

C

if引导的条件状语从句遇到将来通常用一般现在时来表示，故本题后空应用is，本题的含义是如果明天他有空，他将来看奶奶，主句表示将来，要用将来，用will加动词原形，故选C。