Don’t turn off the computer before closing all programs, _________ you could have problems.
| A．or | B．and | C．but | D．so |
his composition was so confusing that I could hardly make any ____ of it.
| A．meaning | B．message | C．information | D．sense |
we must ___ to the public the simple fact that drug are dangerous.
| A．get across | B．get away | C．get back | D．get behind |
Not until I was standing on the edge of death ____ how much I wanted to live.
| A．I realized | B．did I realize | C．I had realized | D．had I realized |
The students discussed the experiment that they would like to see ____ next year.
| A．carry out | B．carrying out | C．carried out | D．to carry out |
This dictionary is _____ to me, but that one is _____ .
| A．great help; helpful | B．a great help; of little use |
| C．important; of few importance | D．very helpful; of no any use |