Giải hpt

Mật độ tập trung dân cư ở nông thôn và thành thị

We had to......the match because of the bad weather

A. Call back

B. Think over

C. Call off

D. Get out

2   Dave sent Jill a really nice letter.

     …………………………………………..

3   I threw Colin the ball.

     …………………………………………..

4   The waiter offered us a menu.

     …………………………………………..

5   The hotel provides its guests with satellite television.

     …………………………………………..

6   My grandma taught me this song.

     …………………………………………

There are ...... when I have to work very hard

A. Times

B. At times

C. From time to time

D. A long time