Some pre-school children go to a day care center,____ they learn simple games and songs.

The road is always busy. Look out when you walk_______．

I think friends should be different each other.一I agree with you. Then we can learn something ________ our friends.

ou seen the film Under the HawthornTree—Of course, I have .it was in our village ____ itwas made.

"Do you know ________ " "Hisfather is a doctor."