15. _____ , he ate nothing.

A. Hungry though he is　　　　 　　　　　　　　 B. As he was hungry

C. Hungry as he was　　　 　　　　　　　　　　　 D. Though he is hungry

14. Generally speaking, ____ according to the directions, the drug has no side effect.

A. when taking　　　　　 　　　　　　　　　　　 B. when taken　　

C. when to take　　　　　 　　　　　　　　　　　　　　 D. when to be taken

13. Shanghai is a _____ city in China, _____ everyone knows.

A. high developed, which　　　 　　　　　　　 B. highly developed, what

C. high developing, which　　　 　　　　　　　 D. highly developing, as

12. His speech was so confusing that I could hardly make any _____ of it.

A. meaning　　 　 B. understanding　　 C. sense　　 　　　　　　 D. explanation