She returned home as soon as she ________.

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The factory opened ________ 1989.

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The Greens ________ China for two years and they are going back to England for a holiday.

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She is good ________ English and does well ________ English exams.

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It’s our duty ________ the environment wherever you are.

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I am very afraid ________ the tigers.

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Lily and her twin sister ________ the Greener China two years ago.

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How many Chinese songs have you learnt ________ you came to China?

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Tom ________ the CD player for two weeks.

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In our exam, the ________ careful we are, the ________ mistakes we’ll make.

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