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11. Alternative sources of energy
developed in the near future.
C. is
A. has been
B. will be
D. was
12. She
_cooking in the kitchen at 7 PM tomorrow.
A. will
B. is
C. will be
D. be
13. Some new energy-saving bulbs
in the dining room
C. will put
D. will be puting
A. will be put B. will put be
14. What should we do to electricity?
A. take
B. save
C. cut
D. waste
15. The wind, the sun, and the wave are some types of
B. costly
sources of energy. :
A. cheap
C. changeable
D. alternative