We were just calling you up _you came in.
. –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.
You are saying that everyone should be equal, and this is ____I disagree.
He failed in finding the job. I think that he _____to get somemore qualifications before applying for the job.