Marco Polo is said to have sailed on __________ Pacific Ocean on his way to Java in __________ thirteenth century.
| A．the; a | B．a; / |
| C．/; the | D．the; the |
________ work has been done to improve the people’s living standard.
| A．A large amount of | B．A large number of |
| C．A great deal | D．A great many |
—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 |