The old woman was ___ tired ___ go any farther. [ ]
The price of the sweaters____ $20.
The first lady of the USA, Michelle Obama visited China this spring. She with her mother and two daughters China for a week.
We go to school ____ our bikes every day. [ ]
On April 14, 2010, a serious earthquake happened in Yushu. More than 2,000 people ______ in it.