---John, this watch is mine. How did you get it?---This morning I found it under my desk, so I ______it_______.
-Do you often help your classmate with his English?-No. He learns English _____ .
-Is Frank _____ than you, Jim?-Yes. He is _____ boy in my class.
You should eat _____ fruit and vegetables, but _____ meat. You are too heavy.
The students in the north are going to have ____ winter holiday.
Our teacher asked us ______ the window closed. It was a little hot in the room.