As nobody here knows what is wrong with the machine, we must send for an engineer to ______ the problem.
| A．handle | B．raise | C．face | D．present |
Google has not kept the written promise ________ made when entering the Chinese market by not checking its searches.
| A．one | B．this | C．that | D．it |
. — Mary, turn off the lights and lock the door before you leave.
—________.
| A．Got it | B．That's OK | C．Go ahead | D．Forget it |
"Better city, Better life", theme of Shanghai Expo 2010, fully ________ the significance and the universal values of modem spirits — Harmony, Progress and Dream.
| A．reflects | B．announces | C．creates | D．permits |
Great scientists don't ________ graduate from well-known universities. Some didn't even attend school a year in total.
| A．usually | B．necessarily | C．extremely | D．formally |
It was some time ________ we realized that we lost the chance forever.
| A．after | B．until | C．before | D．since |