题目内容
The earth will become worse and worse ________ we do something to stop her from being polluted.
| A．if | B．even if | C．when | D．unless |
D
解析
优等生题库系列答案Boys and girls, __________ you choose to wear, your clothes should be clean.
| A．however | B．whatever | C．whenever | D．wherever |
_________ time went on, I got to know more and more about him.
| A．Though | B．As | C．Because | D．While |
In a nature reserve , it’s ___ to hunt ______ fish there .
| A．important , and | B．unable , but | C．incorrect , or | D．correct , or |
The cost of living in Chengdu is among the lowest in China, ________ the quality of life is probably one of the highest.
| A．since | B．when | C．as | D．while |
- How do you like the concert given by F.L.R.?
- Exciting, _______ one piece of the music wasn't played quite well.
| A．though | B．because | C．so | D．And |
The cost of living in Chengdu is among the lowest in China, ________ the quality of life is probably
one of the highest.
| A．since | B．when | C．as | D．while |
.—_____? —I usually play tennis.
| A．Why do you play tennis |
| B．What do you usually do on weekends |
| C．When do you play tennis |
| D．Where do you play tennis |
---How long have you known the doctor ?
---_________he helped me three years ago.
| A．When | B．Before | C．Because | D．Since |