More than 68,600 foreigners are working in Shanghai.The number is 13 times ________ of 1996,when Shanghai started issuing expatriate work permits.
____ 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