I don’t know when my son __________back, but when he __________back ,I’ll give you a call

Health is important to us. We should have more vegetables and fruit and we shouldn’t eat _____ junk food.

In the school where I study English ________ .

Must we move to the next room?–No, you____________ . You may still live here if you like.

He go to school early, but now he goes to school late.