【正文】
1. We waited at the gate of the zoo for our geography teacher, but he didn’t ________ until half past five in the afternoon. A. turn off B. turn on C. turn up D. turn down 2. I recognized the thief ________ he appeared at the entrance of the park. A. the distance B. as soon C. while D. the instant 3. Professor Smith is now ________ the project, which was once ________ Professor White. A. in charge of; in charge of B. in charge of; in the charge of C. in the charge of; in the charge of D. in the charge of; in charge of 4. The President’s advisors were engaged in a ________ for power. A. fight B. war C. struggle D. battle 5. He feels it’s difficult to ________ such a big family with five children. A. help B. aid C. assist D. support 6. It is widely accepted that young babies learn to do things because certain acts lead to ________. A. rewards B. prizes C. awards D. results 7. The president ________ European leaders before taking action last week. A. consulting with B. consulted with C. consulted about D. consulting in 8. People of all races should hold such a mon belief that one’s value lies in what he/she gives ________ what he/she can get. A. except for B. rather than C. in case D. even though 9. The manager promised to keep me ________ of how our business was going on. A. to be informed B. on informing C. informed D. informing 10. He quarreled ________ politics ________Gee. A. with; about B. about; to