9、--Our environment(环境)is getting worse than before.
--You're right.But people have done more and more useful things to protect the earth since Earth Day _______.
A.is started B.was started C.has started D.started
科目:初中英语 来源: 题型:
--Our environment(环境)is getting worse than before.
--You're right.But people have done more and more useful things to protect the earth since Earth Day _______.
A.is started B.was started C.has started D.started
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