The main cause of HIV / AIDS infection in China is drug abuse, ______ is very serious in Yunnan.
As most of their houses were badly damaged after the earthquake, many people had to be ________ in a stadium.
. —How can I thank you? —Don’t mention it. Any other man in that case _______ the same thing.
Zhang Yining has trained continuously for six hours. ______ she is tired out.
—You see, I’m poor in maths, you are not good at English, and... — That’s ____ we should help each other.
Gary Locke , a Chinese-American , once______ as the governor of Washington for 8 years and now is U. S. Commerce Secretary.