—Have you known each other for long?
—Not very long, ________we started to work in the company.
| A．after | B．before | C．when | D．since |
_______about wild plants that they decided 
to make a trip to Madagascar for further research.
| A．So curious the couple was | B．So curious were the couple |
| C．How curious the couple were | D．The couple was such curious |
If there were no examinations, we should have ___ at school.
| A．the happiest time | B．a more happier time |
| C．much happiest time | D．a much happier time |
Stop making so much noise __________ the neighbor will start complaining.
| A．or else | B．but still | C．and then | D．so that |
The students ___ busily when Miss Brown went to get a book she ___ in the office.
| A．had written, left | B．were writing, has left |
| C．had written, had left | D．were writing, had left |
—You’re going to have a rise this month, aren’t you?
—Yes, only $ 100.
— Well, _______.
| A．the more, the better | B．easier said than done |
| C．better than never | D．better than nothing |