Though plastic bags really bring convenience to us，they also ________ many problems for the environment.
| A．lead to |
| B．refer to |
| C．contribute to |
| D．appeal to |
Come and see me whenever _______.
| A．you are convenient |
| B．you will be convenient |
| C．it is convenient to you |
| D．it will be convenient to you |
It is reported that there are over 20,000 persons for the torch relay of the 2008 Olympic Games, ____it the biggest in the Games' history．
| A．making | B．make | C．to make | D．made |
When you are ______ about something, you are ______ to do whatever you can to get it．
| A．anxious; likely | B．eager; possible |
| C．enthusiastic; likely | D．concerned; probable |
Only in this way ______ progress in your Japanese.
| A．you make | B．you be able to make |
| C．can you make | D．you can make |
The manager and general engineer _____ very strict _____ his employees and ____ his work as well．
| A．is; with; in | B．are; with; in | C．is; with; with | D．are; in; in |