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题型：单选题题类：模拟题难易度：普通

Have you heard of Earth Day ?
Yes . The first Earth Day ______ in 1970 to educate us to protect our planet .

A、celebrates B、celebrated C、is celebrated D、was celebrated

举一反三

—Have all the students known that we will have an English exam this Saturday?

—Yes. Every student _______ about it.

—Who's the little girl in the photo, Laura?

—It's me. This photo _______ when I was five.

Long long ago, wood ________ to make light.

The sports meeting in our school last Friday. Our class won the first prize.

Kites ________ message sin the war in the past.

Football ____ to our school subjects last term.

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