You look ________ today．What's wrong?


  1. A.
    worry
  2. B.
    worries
  3. C.
    worring
  4. D.
    worried

Please _________ the lights when you leave the room, or it will waste much electricity.


  1. A.
    turn off
  2. B.
    put off
  3. C.
    turn on
  4. D.
    turn down

_______ is it wasteful to throw away glass and paper?


  1. A.
    What
  2. B.
    How
  3. C.
    Why
  4. D.
    How long

We should stop the factory from __________ the river.


  1. A.
    pollutes
  2. B.
    polluting
  3. C.
    polluted
  4. D.
    to pollute

She ________ in the library at this time of day．


  1. A.
    is study
  2. B.
    studies
  3. C.
    is studying
  4. D.
    does studying

Who are _______ over there?


  1. A.
    they
  2. B.
    them
  3. C.
    their
  4. D.
    there

Our teacher thinks ________ their students ________ their friends.


  1. A.
    over，for
  2. B.
    of，as
  3. C.
    out，in
  4. D.
    about...up

The sun gives us light ________ the day.


  1. A.
    during
  2. B.
    on
  3. C.
    for
  4. D.
    since

I prefer ____ to ____.


  1. A.
    sing; dance
  2. B.
    singing; dancing
  3. C.
    singing; dance
  4. D.
    sing; dancing

________ they had a lot of work to do， ________ they often helped these old men.


  1. A.
    Though，but
  2. B.
    Though，still
  3. C.
    Though，/
  4. D.
    Although，but
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