____is one of the four great inventions of ancient China.
We talked _______ until Mr Wu asked us _______.
What did the teacher ________ the students to _______ at the class meeting yesterday?
Shang Hai is larger than _______ in Jiang su .
This is ____ song I told you about yesterday. Isn’t it _______ beautiful one?
I would like ____________ to the park tomorrow. Why not __________ with me?