—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!
We travelled together as far as Chicago, ______ we parted.
Great changes ______ in the city, and a lot of factories ______.
According to the record reports, one of the rare animals, ______ crocodile, is in ______ danger of dying out.
______, ______ many boys, Jack like playing football.
This is the ____ piano on which the composer created some of his greatest works.