______ I admit that all these problems are difficult, I don’t agree that they can’t be solved.
| A．Unless | B．While | C．Until | D．Since |
.（湖北卷30）.It is illegal for a public official to ask people for gifts or money ____________favors to them.
| A．in preference to | B．in place of | C．in agreement with | D．in exchange for |
介词
（北京卷29）. Would you mind not picking the flowers in the garden? They are everyone's enjoyment.
| A．in | B．at | C．for | D．to |
.（上海卷30）. In ancient times, people rarely travelled long distances and most farmers only travelled the local market.
| A．longer than | B．more than | C．as much as | D．as far as |
. The school was moved out of downtown as the number of students had grown too.
| A．small | B．few | C．1arge | D．many |
（浙江卷19）. Playing on a frozen sports field sounds like a lot of fun. Isn't it rather risky, __________.
| A．though | B．also | C．either | D．too |