It is （ ） impossible to work with this noise around.

（ ） has already been pointed out before, English grammar is not a set of dead rules.

I stayed up all night _____ to find a new solution to the problem.

It is very expensive to （ ） the fashion.

—Professor Wang, must I hand in the paper this week? —No,（ ） . You can hand it in next week.

Scientists say it may be five or six years （ ） this medicine is tested on human beings.

Mary likes classical music _____ her brother likes pop music.

Her （ ） to the job left her with very little free time．

Having been found guilty, the man was given a severe （ ） by the judge.

Only those who have tasted bitterness will （ ） among others.

No sooner had he sat down to lunch （ ） there was a knock at the door.

The doctor said that mental （ ） is the major cause of his sleeping problem.