It is by no means clear （ ） the president can do to end the strike.

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

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

Do you feel like_____today?

The government cannot operate effectively （ ） it is free from such interference.

Fresh air, enough exercise and nutritious food （ ） to good health.

_____, the professor is still trying to learn a new language.

When he awoke， he found himself _____ after by an old woman.

As population increases, （ ）.

（ ） five hundred people are believed to have drowned.

I won’t call you, （ ） something unexpected happens.

Many students thought about the third question for quite a while and had great difficulty answering it. Obviously， it was _____ all.