1 . Days s______ in winter and lengthen in summer.
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2 . You can make your sentence more easily understood by s______ (缩短) it.
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3 . Smoking can _______ (缩短) your life.
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4 . Text messages are much cheaper than talking on a mobile phone, and you can make it even cheaper by ______ (shorten) the words that you use.
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5 . With winter coming near, the days are __________ (short).
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6 . The trousers are so long for me that I have to have them ________ (缩短).
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7 . The governments are working hard together _______ .(缩小贫富差距)
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