--Our environment is getting Worse than before．
--You’re right．But thanks to Earth Day, people have done more and more useful things to protect(保護)the earth since Earth Day ．
A．is started B．was started C．has started
科目：初中英語 來源： 題型：
--Our environment is getting Worse than before．
--You’re right．But thanks to Earth Day, people have done more and more useful things to protect(保護)the earth since Earth Day ．
A．is started B．was started C．has started
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