-If we take a plane, we'll of course have arrived in Paris by the next weekend. (皖南八校)-Don't be sure, we should______the weather factor. What shall we do if it is foggy?
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.
We need to strike a ______ between the needs of the community and the rights of the individual.
The old man has a son and two daughters, ______ treat him well, _______ made him very sad.