第二部分：英语知识运用
第一节 单项填空 从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。(满分15分)
21.—Can I come to ask for some advice at any time?
— Yes, of course. _______
A. If you’re convenient. B. At your convenience.
C. Don’t worry. D. Don’t mention it.
22．As a candidate（候选人）, you must try to make a good on everyone if you want to win the election.
A．decision B．situation C．impression D．position
23．A driver should ________ the road when _________.
A．concentrate on; drive B．concentrate in; driving
C．concentrate to; drove D．concentrate on; driving
24．I like to put everything so that I can find it easily.
A．in time B．in place C．in all D．in general
25．_____ achieve our final goal．
A．Only by working hard we can B．By only working hard we can
