---Where did you ________ our chemistry teacher?--- It was in the supermarket ________ I bought the moon cakes.
I have told you the truth. ________ I keep repeating it?
How long can you ________ your breath underwater?
By the side of the Bird’s Nest , completed in 2008.
___________ certain that his invertion will lead to the development of production.
How wonderful! The _____is made of _________.