Peter’s parents were worried that Peter too much time on line.

Now the air in our city is ______ than it used to be. Something must be done to stop it.

__________ is a ticket for the film Hacker II? —About forty yuan.[ ]

I’m hungry. Could I have some bread?—I’m afraid there’s _______ left, and ________ of us has any spare time to get some.

There are many volunteers _________ are helping the children in Sichuan.