I can lend you the book________that you can return it to me on time.
| A．if |
| B．unless |
| C．provided |
| D．so |
Advertising is distinguished from other forms of communication
the advertiser pays for the message.
| A．in that |
| B．in which |
| C．that |
| D．which |
Do you know the great difficulty he had the work in time?
| A．finished |
| B．finishing |
| C．to finish |
| D．finish |
The place the bridge is supposed to be built should be the cross-river traffic is the heaviest.
| A．which; where |
| B．at which; which |
| C．at which; where |
| D．which; in which |
Mary wrote an article on the team had failed to win the game.
| A．why |
| B．what |
| C．who |
| D．that |
After Yang Liwei succeeded in circling the earth,our astronauts desired to do was walking in space.
A. where
B. what
C．that
D，how