选出句中错误的一项。
根据汉语意思选择正确的单词。
能源
A. fire
B. energy
C. water
April 22nd ____________ World Earth Day.
A. are
B. is
C. was
Everybody should do something ____________ our planet.
A. to save
B. save
C. saving
What ____________ we do to protect our environment?
A. do
B. shouldn't
C. can
We can save water and ____________.
A. energy
B. energys
C. energies