No sooner _____ stepped out of the hall than it began to rain.

If you suspect that illness might be serious，you should not （ ） going to the doctor.

However much （ ）, it will be worth the money.

It was in Johnson’s hotel （ ） the business meeting was held last year.

Jim was caught （ ） drugs into the country.

Such problems （ ） air pollution and traffic jams are becoming more and more serious in some big cities.

Education cannot be （ ） in any country.

He criticized everything and everybody, and even _____ his few friends.

The whole class couldn’t help _____ when they saw the haircut of their new classmate.

Last year he learned （ ） he had expected because he worked a lot harder.

A new technique （ ）, the output as a whole increased by 20 percent.

One of my brother’s many faults is that he never（ ） anything very long.