I don't know when he ____,I must talk to him when he____.A、is coming;comes B、comes;is coming C、comes; came D、came;was coming选哪个

问题描述:

I don't know when he ____,I must talk to him when he____.
A、is coming;comes B、comes;is coming C、comes; came D、came;was coming
选哪个

A,前面是未知,后面是假设。

A
is coming = will come

A
is coming 表示将要来=he will come

A