____ is known to all, China will be an _____ and powerful country in 20 or 30 years’ time.
_______ we _______ the new policy for economy, we would never have bought the house.
If you _______ just wait for a moment, I’ll try to find your papers.
Riding a bicycle can be fun. But _______ you ride a bike to work, and then there isn’t one to ride home?
We consider it necessary that a plan _______ before doing the work.
China is the world’s largest cigarette market, _______ over 30% of the total world consumption.