Look and write. (看图根据提示写单词。）
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
We shouldn't ____________ litter on the ground. A. throws B. throw C. threw
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