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8. "Why is it called a
source?" - “Because it can be replaced easily and quickly."
C. effective
the amount of water our family use every day.
A. renewable
B. non-renewable
D. specific
9. We must
A. lessen
10. Wave energy is a source of
A. environmental friendly
C. environment friendly
11. Alternative sources of energy
A. has been
B. narrow
C. lower
D. reduce
energy.
B. environmentally friendliness
D. environmentally friendly
developed in the near future.
С. is
B. will be
D. was
cooking in the kitchen at 7 PM tomorrow.
C. will be
in the dining room.
C. will put
12. She
В. is
13. Some new energy-saving bulbs
B. will put be
A. will
D. be
A. will be put
D. will be putting
14. What should we do to
electricity?
A. take
B. save
С. cut
D. waste