—Is Sandy your classmate? —Yes. She sits between Tom and .
—Do you know _____ ? I'm going to see him. —Sorry, I don't know.
Let’s ask Mr. Wang for ________ about the earthquake.
I often make mistakes ___________ grammar..
--- ________. Could you tell me the way to the station?
— It’s dangerous to swim in this river. — Yes, you are right. The government has _________ people not to swim in it.