第二部分：英语知识运用（共三节，满分85分）
第一节：单项填空（共15小题；每小题1分，满分15分）
21. He sat in the coffee shop, __________ very frustrated.
A. feel B. to feel C. feeling D. feels
22. If you cheat in the exam, you could hardly _________ it.
A. throw away B. get away C. get away from D. get away with
23. No potatoes for me—I’m _______ a diet.
A. at B. in C. on D. with
24. The speed of cars and trucks is _____ to 30 kilometers per hour in large cities in China.
A. limited B. limiting C. limiting to D. limited to
25. Smoking is a bad habit. You _________ give up.
A. ought to B. should C. must D. all the above
