The producer comes regularly to collect the cameras _____ to our shop for quality problems.
| A．returning | B．returned |
| C．to return | D．to be returned |
The speaker _________ his voice to make herself heard.
| A．rose | B．lifted |
| C．raised | D．reduced |
As is known to all, earthquakes are ___________ disasters _________ can destroy buildings and kill people.
| A．nature; that | B．natural; which |
| C．nature; who | D．natural; what |
I __________ read books rather than go to the countryside this weekend.
| A．prefer to | B．prefer |
| C．am preferring | D．am preferring to |
All of my classmates have __________ fond of the new teacher since he came to teach us.
| A．gone | B．become | C．changed | D．had |
Travelling is interesting but ______________.
| A．tired | B．tire | C．tiring | D．tires |