Don’t give up _____ you will never succeed.
| A．and | B．but | C．while | D．or |
The girl is ____ a nice girl ____ we all want to help her.
| A．such; that | B．too; to |
| C．so; that | D．very; that |
The bus driver always says to us ,“Don’t get off________ the bus stops.”
| A．when | B．while | C．until | D．if |
----Did you call Sara back ?
----I didn’t need to ,_____ we’ll have a meeting together tonight.
| A．though | B．unless |
| C．because | D．if |
—You look so tired. What’s the matter?
—I was so busy that I didn’t go to bed 12 o’clock last night.
| A．until | B．unless | C．if | D．so |