Clearly, in a system _________ every decision is made on the basis of tradition alone, it may be difficult to achieve progress.
| A．that | B．when | C．where | D．which |
The present question is ____ many students consider it impossible ____ is really possible if effort is made.
| A．what; that | B．that ; that | C．that; what | D．what; what |
Some very common things such asto the sun for a long time will do harm to people's skin and even cause skin cancer
| A．exposing | B．being exposed | C．having exposed | D．exposed |
you may have , you should gather your courage to face the challenge .
| A．However serious a problem | B．Whatever serious a problem |
| C．However a serious problem | D．No matter how a serious problem |
Looking back on the three - year life in the mountain village, Thomas it as a milestone in his personal development
| A．values | B．confirms | C．declares | D．assumes |
- - How dangerous it was!
- - Yes, but for the passer - by' s quick action, the girl _____
| A．was drowned | B．could have been drowned |
| C．had drowned | D．should be drowned |