6. 一_ are you leaving for Beijing?

—In a couple of days.

A. How far    B.    How often

C. How soon    D.    How long

1.  要想更好地了解世界，我们有必要学好英语。

It is necessary _ _ _ __ _to know more about the world.

5. The old man is a good swimmer,

and even now he often swims_ Tuojiang River after supper.

A. over    B.    through

C. to    D.    across

4. I have_ my watch everywhere.

    But I cannot find it.

A. looked at    B.    looked up

C. looked for

3. We planted _ trees  last  year.

A. hundreds of      B. hundred of

C. five hundreds    D. five hundred of

2. 一I think there will be  _  air pollution whenever there are _ people driving.

—That’s true! I hope the air will be fresher soon. 

A. less； less    B.    less； fewer

C. fewer； fewer    D.    fewer； less

1. I’m busy now. I _ to   you after school this afternoon.

A. talk         B.    talked

C. will talk    D.    have talked

5. He_(not  come) here next Sunday.

4. _   there    _ (be) a heavy snow tomorrow?

3. —_Tony  study in New York in the future?

   —No, he_ (will).