---Whose handbag is this?---It _________be Li Ping’s. I saw her take hers away just now.
—What is your best friend like?. —He is a helpful student. He often helps the teachers _____ papers.
We ____ the last bus and didn’t have any money for taxi, so we had to walk home.
He is listening _____, but he can ____ hear anything.
—Do you know the boy ____ is playing soccer there? —Certainly, he is a friend of my _____
—How do you go to school every day? —I ____ , but I ____ by bike a year ago.