My ________ sister works in a hospital. She is 3 years ________ than I.

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Shanghai is ________ centre of industry(工业) in China.

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They are going to the park________.

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If it ________ fine tomorrow, we will go to Xi'an.

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A．is　　　　B．was　　　　C．doesn't

She isn't in. I ________ a message for her on her desk.

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Two weeks ________ a long time.

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I'm good ________ English, but a little weak ________ Chinese.

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You may have one bag ________, children.

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The children ________ on the playground when I left school.

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The teacher told us that the earth ________ the sun.

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