题目内容
29. In the survey, we asked the workers about things __________made their work harder to do.
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30. We'd like to make an ________with your manager to further discuss the contract.
31. About a quarter of American adults say that they ________a book in whole in the past year.
32. We should be ___________of cultural differences while doing foreign trade .
33. This study has found some key factors _______employees' stress in their work.
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