May I have a look? ______________A、Thank you. B、Sure. C、You’re welcome.
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