Why not ____?
| A．let him to go home | B．to let him go home |
| C．let him go home | D．to let him to go home |
You need to have______if you want to teach the group of naughty children well.
| A．energy | B．patience |
| C．strength | D．belief |
Don't worry. I'm sure things will get better.
| A．in time | B．on time |
| C．at times | D．at the time |
Tom was about to close the window ________ his attention was caught by a bird.
| A．when | B．it | C．and | D．till |
With so many noises from the busy traffic in the street, I couldn’t______ and do my research work.
| A．put down | B．set down |
| C．cut down | D．settle down |
You _______ here last week if you were really worried about your work.
| A．ought to come | B．ought to be coming |
| C．ought to have come | D．ought have come |