Question

【题目】—Do you know when he will come back tomorrow?
—Sorry, I don't know. When he ______ back, I'll tell you.
A.comes
B.will come
C.come
D.may come

Answer 1

【答案】A
【解析】在含有if条件状语从句的复合句中，主语用将来时，从句用一般现在时表示将来。主语he是第三人称单数，动词用三单形式，故选A。