is应该换成will be吧

is going to be /will going to be /are going to be 应该用在哪 it seems as if it is going to rain中的be going to 可以换成will吗?为什 That would be very interesting.would可不可以换成will What will be will be ,What is over is over. is、was、will、will be的区别 will be closed is closed everything is will be ok 还是 everything will be ok when will you be back 可不可以把be换成come?为什么?有什么不同? "We'll be looking for your book"这个句子中的“will be looking"可以换成“ you will never be a top student 中的be 可否换成become? please hurry up,so you will catch the last train so应该换成什么连词, I will be back?It is a