The little girl painted one side of the paper green but _________ side black.

 — A report says an old man supports some poor children by collecting waste things.— Yes. We all feel 　　　 is really kind 　　　 him to do so much for the children.

Water is so important that ______ everyday tasks can be completed without it.

—Lin Tao, do you want to visit the Great Wall,         ?—Sure, Wen Wei           wants to.

--________do you go to the dentist? --Let me see, twice a year, maybe.