Paper money was in___________use in China when Marco Polo visited the country in __________thirteenth century.
Xiao Li didn’t come to our party. We all fell sorry __ him.
Taiwan is an island that lies ___ the southeast coast of China.
---Next Monday is my birthday. ---Is that so? ____ ---Thank you.
What surprised me was not what he said but ____ he said it.
You think you’re poor, but look at the people in really poor countries─it’s all ____.