To solve the traffic problem, more and more bridges ________ across the river every year in Chongqing.

This is the only way we can imagine himout of his foolish plan

_____ it as a basic principle of the company that suppliers of raw materials should be given a fair price for their products.

What a heavy haze! The air pollution is terrible now.—It ________ worse unless we ________ action to protect the environment.

The black people thus lay onthehardwoodenboards,_________standup.