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21春南开大学《大学英语(一)》在线作业参考答案

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Mary () brown eyes and golden hair.
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Polly is very busy. She () work at about 7.00 every day.
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My elderly father seems very ____ to sit in front of the TV all day long.
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Not until darkness fell ____ he hadn’t done half of his work.
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We will have to ____ the matter carefully before we can draw any conclusion.
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Communication is necessary and fruitful between different ____.
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