When and where to build the new factory ____yet.
| A．is not decided | B．are not decided | C．has not decided | D．have not decided |
—When does your plane take off?
—At 3：00 p．m. tomorrow. I've just called the airport to ________ it.
| A．intend | B．argue | C．organize | D．confirm |
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 |