2. Choose the best answer to fill in the blank. (2p)
1.
causes many breathing problems.
B. Fresher air
A. Polluting air
2. Our houses will use the sun or the wind
A. to do
B. to make
3. Many products are now helping you
A. reuse
B. cut down
4. Our dream house will be located
A. between
B. in
5. We should open all the windows, so we don't
C. need
B. have to
A. needn't
C. Fresh air
B. have
electricity.
C. to give
6. In the future, cars might use energy from
A. oil
your energy
C. recycle
the sea.
C. at
B. power
C. water
7. It takes a lot of energy to keep food cool, so don't
putting hot things inside.
A. make
D. Polluted air
C. do
D. to have
bills.
D. reduce
D. on
use air-conditioners.
D. have
C. leave
D. stop
8. Plant more trees in the schoolyard because they will provide shade and
the atmosphere fresher.
A. have
B. make
A. of
A. str
D. use
5. A. t
D. gas
the fridge door open or
2. Re
Suds