It’s surprising that your brother Russian so quickly--- he hasn’t live there very long.
–We spent all our money because we stayed at ____most expensive hotel in town. -- Why didn’t you stay at ____cheaper one ?
The open university was started in order to help those who ____ having a university education when they were young.
. –Mike got “ C” in his history test. --_____? He has been working so hard at it .
They will fly to Shanghai to visit the EXPO in 2010 ,____they plan to stay for two or three days.
Since the matter was extremely ______, we deal with it immediately.