—Don’t litter the ground, boy. Look at the sign, “Rubbish must be thrown into the dustbin.”—Sorry, I’ll __________ right now. 

Tom helped the teacher to hand out the test papers, didn’t he ?

 —Don’t ____ too late , or you will feel tired in class. —I won’t , mum. Good night.

When Tom ______ Beijing, it is raining.

 ---What do you ______ the story.  ---It’s boring.