Will they have a meeting?Do you know?(合并成一句) Do you know______ ______ will have a meeting?

问题描述:

Will they have a meeting?Do you know?(合并成一句) Do you know______ ______ will have a meeting?

do you know if they will have a meeting?
do you know whether they will have a meeting?

whether they

Do you know whether / if they will have a meeting.主句中为一般现在时,从句中该用什么时态就用什么时态.