________ the civil service has its obvious advantages，it doesn’t necessarily suit everyone.
| A．While | B．Because |
| C．Since | D．When |
At the meeting, the old man _____ some good advice about bringing down the market price of housing.
| A．came out | B．came about |
| C．came along | D．came up with |
With the school rules _____ by the students, the school has taken on a new look.
| A．respected | B．respect | C．were respected | D．respecting |
In the last twenty years, seven Canadian scientists _____ the Nobel prize!
| A．won | B．had won | C．was winning | D．have won |
We all like the photographs _____ by our teachers.
| A．were taken | B．taken | C．taking | D．to take |
--- What’s the weather like?
--- Pretty hot and wet in the summer, but it _____ be quite cold in the winter.
| A．may | B．can | C．must | D．should |