We can go in my car ______ you want to walk.
| A．if | B．because |
| C．unless | D．when |
The boy is________clever________he can work out the problem easily．
| A．so；that |
| B．such；that |
| C．so；if |
| D．such；if |
Usually computers________to search the Internet．
| A．use |
| B．are using |
| C．are used |
| D．used |
Tea was brought to Korea and Japan________the 6th and 7th centuries．
| A．at |
| B．in |
| C．during |
| D．into |
Our parents advised us________out alone at night because it was dangerous．
| A．to go |
| B．not to go |
| C．going |
| D．don’t go |
Shen Nong was the first to________tea as a drink．
| A．discover |
| B．look for |
| C．find |
| D．find out |