题目内容
All staff members in the research and development team have worked ______ hard throughout the year.
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Since you are under 13, you can enroll in our program ______ your parents accompany you or give consent.
The country is now producing large food ______, but there are still numerous local shortages.
We are not ______ responsible for all the belongings in your room, so please leave your valuables in our safe at the front desk.
The company encourages its employees in marketing to ______ evening courses in the field of marketing.
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