The students are full of energy．They are thirsty ________knowledge．

“_______ you’ve made! But you should still work harder,” the teacher said to the boy.

Did you see a man in black pass by just now — No, sir. I ____ a newspaper.

Who listens ______________, Tom, Jack or Bill

How could you walk into the lab with your shoes?You’re________to take them off before you enter it.I told you so![ ]