In our class, the student leaders are on ______ duty every ______ few days.

He was    poorest man here years ago, but now he is       rich man.

He has a great interest in ______ history, especially ______ history of the Tang Dynasty.

______ number of people who use English as ______ second language is increasing in China.

David wants to be _______ engineer while Cathy wants to be _______ doctor.

Color shapes our view of ___world and it may have ___far more influence on our lives than many of us realize.

It can’t be denied that the Diaoyu Islands are _______ part of China and what some Japanese have done recently is actually _______ offence against Chinese people.

The WTO can't be called _____ "world" organization without ____ world’s largest nation-Russia．

Japanese Vice-Premier Sumochizi  called on Friday for _____ all-out effort to develop      ___friendly relationship with neighboring  Asian countries.

----- Stay a bit longer; it’s been such ________ fun having you with us.
-----Thanks, anyway. I’ve got ________ early start tomorrow morning.