He chose to teach in a mountain village, though he__________in the city for a better life.
| A．could stay | B．would stay |
| C．could have stayed | D．should have stayed |
__________ 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 |
In China, Some people are quite well-off __________ some live in terrible conditions, especially in remote areas.
| A．though | B．as |
| C．while | D．when |
It's not easy to change habits，__________ with awareness and self-control, it is possible.
| A．for | B．or |
| C．but | D．so |
It is suggested that we __________ watch the movie " Life of Pi"，which will excite us most.
| A．could | B．can |
| C．must | D．should |
__________，I think, and you will settle the problem.
| A．So long as you keep up your spirits |
| B．If you make your effort |
| C．Making great efforts |
| D．A bit more effort |