—Teens spend too much time on the computer games! It’s become a big problem now.
—Yes. They should stay away from the games____ it is too late!
| A．until | B．after |
| C．before | D．when |
The book is well worth ______. Everyone ______ buy one and read it.
| A．read， be supposed to | B．reading， is supposed to |
| C．reading， is supposed | D．read， are supposed to |
You have grown up and you should _______ what you have done .
| A．be responsible for | B．be responsible to |
| C．responsible for | D．responsible to |
It’s difficult for us to __________ each other because we have spent so much time together .
| A．separate from | B．separate to |
| C．play with | D．lay for |
Smoking ______ in public places in many countries. So you ______ smoke here.
| A．doesn’t allow ， can’t | B．isn’t allowed， mustn’t |
| C．wasn’t allowed， may not | D．didn’t allow， can’t |
---He is an honest person ， so what he said is _______.
A， knowledgeable B， valuable
C， comfortable D， believable