题目内容
Being a manager, he has paid a lot of attention to the _________ in his factory.
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In the past twenty years our country has got great achievement in _________ field.
Jack has flown t New York, but he will be back before long, because he went there only on _________ business.
To __________ sure of getting a seat you should arrive early at the cinema.
The poor girl was so frightened that she could do __________ but stand there weeping.
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