Part I Vocabulary and Structure (20 points)Directions: In this part there are 20 incomplete sentences. For each sentence there are four choices marked A, B, C and D. Choose the ONE answer that best completes the sentence. Then mark the best choice and mark the corresponding letter on the Answer Sheet with a single line through the center.1. It is reported that a (n) ______of accidents has occurred at that crossroads. A. series B. lot C. number D. amount2. If someone is in the United States for good, it means he is there______. A. to do good B. temporarily C. to rest well D. permanently3. Please let us have more time, ______? A. shall we B. will you C. won’t D. don’t you4. There is no hurry. You can take your time ______ those exercises. A. doing B. to do C. done D. to be doing5. He spoke English so well that I took it ______ that he was an American. A. for granted B. as true C. for certain D. as such6. ______ we need air and water, so we need criticism and self-criticism. A. Even though B. So long as C. Just as D. Now that7. Children are always curious ______ everything they see. A. to B. for C. on D. about8. Anyone, rich or poor, old or young, sick or ______, can follow a favorite hobby. A. well B. good C. fine D. happy9. It’s desired that she ______ to teach us at least twice a week. A. comes B. will come C. come D. may come10. ______, I should ask them some questions. A. Should they come to us B. If they come to us C. Were they come to us D. Had they come to us11. In 1990 he caught a serious illness from ______ effects he still suffers. A. that B. which C. what D. whose12. He found ______ everybody know what had happened. A. it necessary le...