—Could I use your computer for a few moments，please?
—________.I'm not using it myself.
A. Come on B. It depends
C. Go ahead D. That's great
Professor Smith will come here
to give a speech.All the preparations must be________before 5 o’clock.
A. in time B. in sight
C. in place 
D. in control
—Another beer，OK?
—________The same again，please.
A. Not really. B. Not likely.
C. Why not? D. Don’t bother.
Though in his seventies，the old man is still as ________as a young man and hates sitting around doing nothing all day.
A. enthusiastic B. energetic
C. talkative D. sensitive
You may have one of these；in other words，you may have ________you choose.
A. whichever B. wherever
C. whenever D. no matter which
Children are tired of learning often because they are________to do better than they can, both at school and at home.
A. suggested B. expected
C. hoped D. helped
