--- Did you turn off the lights before you left the computer room?
---- Oh, I forget _______ them off. I’ll go to do it.
A. to turn B. having been turned C. to have turned D. turning
The policewoman believes that Derek gave a reasonably _______ account of what had happened to the poor family during the robbery.
A. informal B. potential C. constant D. accurate
April 30 , 2010 witnessed the opening ceremony of the Shanghai World Expo, which has greatly China's status in the world．
A .enlarged B. inspired C. promoted D. encouraged
. No decision about the holding of the conference until all the related factors have been
taken into consideration．
A. will be made B. is made C .has been made D. is being made
. Dr. Frank failed many times but he finally _______ to find a successful way to solve the problem.
A. broke off B. broke out C. broke down D. broke through
The bus _______ at 8:30 p.m., so I have to be at the station by 8:10 at the latest.
A .has left B. would leave C. leaves D .will have left
