题目内容：

What are your sister going to do when she____ (grow) up 理由

优质解答

What are your sister going to do when she (grows) up ?
What are your sister going to do是主句,一般将来时态
when she (grows) up 状语从句
主句是一般将来时,以when等引导的状语从句要用一般现在时