第二部分：英语知识运用（共两节，满分35分）
第一节：单项填空（共20小题；每小题1分，满分20分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳答案，并在答题卡上将该项涂黑。
21. Mr. Brown doesn’t feel at _______ease for the time being for _______ little money the present job brings him can hardly support his extended family.
A. /; the B. an; the C. an; / D. the; a
22. — Why on earth didn’t you answer the door?
— I’m terribly sorry, but the telephone _______, too.
A. is ringing B. was ringing C. rang D. was about to ring
