On no account （ ） to deprive(剥夺) a student of his right to receive education.

The two companies decided to （ ） on a project concerning animal cloning.

In this workshop, the output of July was three times （ ） of January.

The purpose of the conference is to （ ） the friendship among the Asian countries.

Take your time and think the matter over before you _____ a conclusion.

You （ ） wear your glasses, for the words are rather small.

The chemical factory was torn down （ ） protecting the environment.

Although _____ ten years ago， the machine is still in good condition.

_____ dictionary is enough for me.

I think the beef must have been rotten, for it _____ unpleasant smell.

_____， we went swimming in the river.

His fellow workers saw him fall down and blood came out from the open（ ） .