The news shocked the whole nation ____a strong earthquake hit Yushu on Apr.14, 2010.
Our English teacher requested that the homework ________ tomorrow morning.
Smoking, which may be ________ fun for some people, is ________ cause of discomfort for the people around him.
— I was worried about math, but Mr. Brown gave me an A!— ________ That’s a difficult course.
—It’s a shame to ask you to lend me more money, but…一________You really need money to keep on with your education.
It is said that many kids are worried about the year 2012, they think the earth will be destroyed by disasters.