_______ does your father watch TV? –He is always busy, so he _______watches TV.

Teenagers like reading the books ________ are written by Guo Jingming.

Talk to your teacher and you will get help ________ you have a problem.

I haven’t got a camera.——I think you should buy_______. It’s useful for you.

Henry _____be at home because he phoned me from his office just now.