1. Looking back，we have reasons to believe that ______ more prosperous and stronger China will surely make new contributions to ______ civilization of mankind.
A. a; a B. the; the C. a; the D. the; a
2. The president was expected to make clear to the world that China was ready to work with other countries.
A. them B. its C. itself D. it
3. The pirates（海盗）said that they would make their demands “at a later time”.
A. know B. known C. knew D. knowing
