【正文】
break________she got to her office. A. since B. that C. when D. until 2. John thinks it won’t be long________he is ready for his new job. A. when B. after C. before D. since 3. Too high house prices can be brought under control, ________ the authorities introduce a series of regulatory policies. A. even if B. as if C. so that D. provided that 4. The school rules state that no child shall be allowed out of the school during the day, ________acpanied by an adult. A. once B. when C. if D. unless 5. ________you may have, you should gather your courage to face the challenge. A. However a serious problem B. What a serious problem C. However serious a problem D. What serious a problem 6. ________ the poem a second time, the meaning will bee clearer to you. A. Your having read B. If reading C. While reading D. When you read 7. Try ________ he may, he is sure to fail without correct instructions. A. although B. as C. if D. since 8. According to the rules of the factory, ________ you have a doctor’s note ,you mustn’t ask for leave. A. unless B. on condition that C. though