Drugs can do great harm (危害) not only to you but also to your family. You must be _________them.
| A．along with | B．out of | C．in front of | D．away from |
_______ you study harder, you’ll fall behind others.
A. If B. Unless C. Until
She _______ the computer since 2001.
A. has had B. has bought C. had
In the past 10 years, great changes ___________ place in Beijing.
A. took B. have taken C. have took
– I am not interested in the story.
– _________
A. Neither am I. B. So am I. C. So I am.
______ of the area _______ covered by trees.
A. Two-third; is B. Two thirds; is C. Two-third; are