27.Many students were watching the story of the heroes from Changjiang University on TV, ________ moved to tears.
White-collar workers in China are willing to postpone their retirement age ______ blue-collar workers prefer to retire early.
“Got it?” Professor Smith says, “______, let’s move on to the next part.”
By accepting lower prices, organizers can sell tickets that would ______ go unsold.
The lack of health facilities and necessary protection for medical workers partly ______ the epidemic (蔓延) of Ebola.
Dozens of people were waiting with a camera for ______ seemed like hours, hoping to catch a glimpse of the US First Lady, Michelle Obama.