【专升本—英语】2012年专业英语历年考试真题（9）

11. With winter （）on, it’s time to buy warm clothes. 

A. came

B. comes

C.come

D. coming 

12. The ground is（）with（）leaves.

A. covering, falling 

B. covered, falling 

C. covered, fallen 

D. covering, fallen 

13. Lessons（）easily were soon forgotten

A. to learn

B. learn 

C. learned 

D. learning 

14.（）different kinds of piano, the workers farther improved their quality.

A. To produce 

B. Being produced 

C. Produced 

D. Having produced 

15.The students in the university are all taking courses（）a degree