—Whose pencil box is this?
—It _____ be Tom’s. It has his name on it.
| A．must | B．may |
| C．might | D．can’t |
—Why do you like living in the countryside? —Because there’s ___noise and ___cars there.
| A．less; fewer | B．fewer; less |
| C．less; less | D．fewer; fewer |
—_______ will be not easy for people to work without computers.
| A．There | B．This | C．That | D．It |
_______ you do in the future, you should try your best to do it well.
| A．However | B．Whenever | C．Whoever | D．Whatever |
There is _____ pollution in the world. We must stop it.
| A．much too | B．too much |
| C．many too | D．too many |
The population of Shanghai is larger than _____ of Shenyang.
| A．that | B．it | C．one | D．this |