My new classmate, John is a boy from ____.
—Cathy, could you come to our art club tomorrow?—______.
As volunteers, they should do ______to help the children in trouble.
Which is the picture of the best tennis player in China?
—Why do you want to stay at home?—Because I ______ good when I am with my family.
I'm 13 years old and my sister is 15 years old. So my sister is