Offices cannot work properly ______ certain important ______.

A. without; equipments
B. without; pieces of equipment
C. unless; equipments
D. unless; pieces of equipment
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科目:高中英語(yǔ) 來(lái)源:同步題 題型:單選題

Offices cannot work properly ______ certain important ______.
[     ]
A. without; equipments
B. without; pieces of equipment
C. unless; equipments
D. unless; pieces of equipment

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