It was not until the subprime loan crisis(次贷危机) ____ great damage to the American financial system that Americans ____ the severity of the situation.
The cheering went on for quite some time _____ it died down and people took their seats again.
—I _________ his telephone number. —I have his number, but I _________ to bring my phone book.”
He was busy preparing a speech , only _______ once in a while to rise from the table for a tea .
Mr. Duncan raised an unnecessary question _______ he then failed to find an answer.
I don't like to go swimming with my class even though I like to swim because I am so embarrassed _______ in my bathing suit.