---You needn’t take an umbrella. It isn’t going to rain.---Well, I don’t know. It __________ do.

I ________worry about my weekend—I always have my plans ready before it comes.

— Is there an express to Beijing tonight? — There ______ be, but you’d better call the booking office to make sure. 

— Must I finish the exercise at school? — No, you don’t have to. You          do it at home.

—Must I finish my homework at school?— No, you_____. you can do it at home