All of them try to use the power of the workstation ___ information in a more effective way.
| A．presenting | B．presented | C．being presented | D．to present |
—Why did you leave without a word of warning to John?
—But whatotherwise? He never listens to me.
| A．could I have done | B．would I do |
| C．must I have done | D．should I do |
I think your health will soonif you do regular exercise.
| A．give up | B．take up | C．pick up | D．get up |
—Excuse me, but could you please turn the radio down?
—Sorry, Iyou could hear it.
| A．don’t realize | B．haven’t realized | C．didn’t realize | D．hadn’t realized |
With some technical problems to be solved, it may be a whilethe system is put into use.
| A．when | B．after | C．since | D．before |
Only when you stay withlocal people for a period of time will you havebetter understanding of life here.
| A．a; 不填 | B．the; a | C．不填; the | D．the; the |