介词填空

Earth Day was founded ________ Warn people ________the dangers ________ the environment.

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Oh! It sounds ________ you're interested ________ the games.

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It's a special day ________ think ________ the future ________ the Earth.

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He won the first prize ________ the speech contest.

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Congratulate you ________ the New Year.

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He can do that because ________ his hard work.

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选词填空

all  both

________ the roses will bloom soon.

The artist is drawing a picture ________ my family.

句型转换

Let's ________ ________ the street.