when will you be back 可不可以把be换成come?为什么?有什么不同?

When will you be my When will you be free this week? what will you be when you grow up You will be e_______ when you see the doctor What will you be when you grow up?怎么回答? What will you be when you grew up?怎么回答? i miss you when you will be at what? When will you be arriving 和When will you arrive 有什么区别 when will you be away?这句话对吗? I will be right here when you get when do you think the doctor will be in When you will be get married?中文是什么 ,i will be waiting when you coming home 出自哪里 When will you be coming这首歌是谁唱的 when will you be coming 原唱是谁?一个女声 You will be informed when the book becomes______(可用的) please ( ) ( ) ( ) ( )when you ( ) ( ) forthe bus or others will be unhappy when will it be