第二部分 英语知识运用（共两节，满分45分）
第一节 单项填空（共15小题；每小题1分，满分15分）
21. At that time, America was at ____ war with Iraq and Shelly worked as ____ doctor in the army.
A. a; a B. the; a C. 不填; a D. the; 不填
22. ---- How long have they _____?
---- They _______ more than twenty years ago.
A. been married; got married B. married; married
C. got married; were married D. got married; got married
23. Don't leave for there until__________ to do so.
A. you'll be told B. told C. telling D. you are told
24. — I won't go in for mountaineering because it is too dangerous.
—__________ you've told me you would.
A. Since B. Because C. But D. For
25. It was after he got what he had desired (希望) ________ he realized it was not so important.
