I have ________ everything that happened, as I remember it.
| A．set off | B．set on | C．set out | D．set down |
The Foreign Ministry Spokeswoman on Thursday urged Japan to stop making irresponsible________on the incident in waters off the Diaoyu Islands.
| A．comments | B．explanations |
| C．arguments | D．debates |
The United Nations is trying to free the world________the threat of war.
| A．at | B．in |
| C．by | D．from |
Traffic conditions in Beijing________for decades.At first people only complained about jams during rush hours，but today every hour is rush hour.
| A．is worsening | B．have worsened |
| C．have been worsening | D．worsened |
It is difficult for children to change their eating habit later in life.________，parents should encourage healthy eating from an early age.
| A．Otherwise | B．Therefore |
| C．Besides | D．However |
It is well known that knowledge is________treasure house，but practice is________key to it.
| A．a；the | B．the；the |
| C．a；/ | D．/；the |