--Mum I want ______ of the two coats.
---Sorry. You can only buy one.
| A．both | B．all | C．some | D．one |
—Have you graduated from Shandong University?
—Yes.I________there for 4 years.
| A．studied | B．have studied |
| C．had studied | D．have been studying |
The train moved slowly from the station，but________speed as it reached the open country.
| A．picked up | B．looked up |
| C．put up | D．made up |
We must keep our room clean，for dirt and disease go________，you know.
| A．hand in hand | B．step by step |
| C．from time to time | D．one after another |
Hosting the 31st Olympics is________great honor and the Brazilians are working hard to make the games________success.
| A．a；/ | B．/；a |
| C．a；a | D．/；/ |
Usually，the organizing committee should have a________meeting every two weeks.
| A．common | B．regular |
| C．similar | D．normal |