—What’s ______ most useful invention in the 20th century? —_____

—What’s ______ most useful invention in the 20th century? —______ computer, I think.

#34630

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______ earth we live on is bigger than ______ moon.

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Beijing is _________ capital of China and it is _________ city with many places of interest.

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 His father is      engineer. He designed such     useful machine

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Do you know ______ girl in green? She is our monitor.

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 This is ______ eraser and that’s _____ ring .

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