—I was worried about my math,but Mr.Brown gave me an A. —______________.A.Don’t worry about it. B.Congratulations! That’s a difficult course.C.Mr.Brown is very good.D.Good luck to you!
Scientists are convinced ______ the positive effect of laughter ______ physical and mental health.
In American there are more households with pets than ______ with children.
They are said to have developed a new ______ to teaching, which is said to improve classroom teaching greatly.
The first one ______ will get a beautiful gift.
Children, who grow up in a friendly family, are more ______ to get along wellwith others.