What lesson China can draw from ____ financial crisis (金融危机) in the United States has become _____ hot topic in Beijing..
____ the boy is to learn to talk.
The girl is very shy, and never speaks until ___ to.
Every minute is made full use of __ at our lessons.
I would appreicate ___ very much if you could tell me something about bird flu.
----____your watch? ---Yes, I ___ it when I tidied the drawer