What’s wrong with my son, doctor? — ____________ serious, just a slight cold. He’d better drink some water.

_______ is the train station from the school? — About twenty-minute bike ride.

The city of Nanchong has grown so fast that it’s at leastwhat it used to be.

Who’s that girl swimming in the pool? Is it Lucy?－It be Lucy. She is sleeping in her bedroom now.

There is _____ “s” and _______ “c” in the word “school”.