It’s _____ world of wonders , ______world where anything can happen ．
| A．a ; the | B．a ; a |
| C．the ; a | D．/ ; / |
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
______ it is raining hard ， they are still working in the field.
| A．Because | B．As soon as |
| C．Though | D．Unless |