1.Sometimes children have trouble ___ fact from fiction and may believe that such things actually exist. A. to separate B. separating C. for separating D. of separating 来源：考试大 2. Although punctual himself, the professor was quite used ___ late for his lecture. A. to have students B. for students being C. for students to be D. to students being
3.It s no use ___ me not to worry. A. you tell B. your telling C. for you to have told D. having told 来源：考试大 4. ___ all our kindness to help her, Sara refused to listen. A. At B. In C. For D. On
5.The children prefer camping in the mountains ___ an indoor activity. A. to B. than C. for D. with
6. ___ of the burden of ice, the balloon climbed up and drifted to the South. A. To be free B. To free C. Freeing D. Freed
7. ___ quite recently, most mothers in Britain did not take paid work outside the home. A. Until B. Before C. From D. Since 来源：考试大 8. ___ enough time and money, the researchers would have been able to discover more in this field. A. Giving B. To give C. Given D. Being given 来源：考试大 9.Not only ___ us light, but also it gives us heat. A. the sun gives B. the sun does give C. gives the sun D. does the sun give
10. ___ the claim about German economic might, it is somewhat surprising how relatively small the German economy actually is. A. To give B. Given C. Giving D. Having given