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When a bike gets close to something it rings the bell to warn the rider to be ________．

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Let us hope ________ greater success in the ________ Olympics!

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My heart stopped beating as I landed ________ on a mountain covered　snow．

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Instead ________ flying softly to earth I began to fall faster and faster ________ that I could not turn, dive, circle or dance．

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________ the help of my teacher, I can make ________ new moves．

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We have written a lot of e-mails ________ the computer ________ the past few years．

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Since ________, my friends and I have used computers to deal ________ information．

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We can share information ________ others and we can talk ________ each other．

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I didn’t know what they were talking about; ________, let’s go back my history．

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We are good friends, so we have a lot ________ common ________ each other．