Frank _____ to see his grandma if he_____ free tomorrow .A.will come ,will be B.comes ,is C.will come ,is D.comes ,will be

问题描述:

Frank _____ to see his grandma if he_____ free tomorrow .
A.will come ,will be B.comes ,is C.will come ,is D.comes ,will be

选C

c

选C...在原因状语从句中用一般现在时表将来,所以直接用is