1．As we all know________life is hard for any of us.If we want to live________happy life，we must work harder.
A．/；/ B．/；a C．a；/ D．a；a
答案 B
解析 第一个life泛指生活，不加冠词；live a happy life过幸福的生活，故选B项。
2．Those trucks，filled with all kinds of relief supplies，are________to the earthquakestricken areas in Sichuan.
A．speeding up B．keeping up
C．holding up D．sweeping up
