It was stupid ____ him for help. Everyone knows that he is very mean.
| A．you ask | B．for you to ask | C．of you to ask | D．of you asking |
.- Can I smoke here?
- Sorry. We don’t allow _____ here.
| A．people smoking | B．people smoke | C．to smoke | D．smoking |
.It’s no _____ arguing with Bill because he will never change his mind.
| A．use | B．help | C．time | D．way |
- Robert is indeed a wise man.
- Oh, yes. How often I have regretted _____ his advice!
| A．to take | B．taking | C．not to take | D．not taking |
A poet and artist _____ coming to speak to us about Chinese literature and painting tomorrow afternoon.
| A．is | B．are | C．will | D．has |
Going on a trip into_____ space must be quite __ exciting experience.
| A．/; the | B．/; an | C．the; an | D．the; the |