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【单选题】
When the teacher came into the classroom, all of us __________ the classroom.A.
are cleaning
B.
were cleaning
C.
cleaned D are cleaned
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【单选题】What is the definition of inquiry?
A.
An i nquiry is usually made to seek a supply of products, service or information.
B.
An inquiry is the seller's promise to supply goods on stipulated terms.
C.
An inquiry is usually made to seek a supply of information.
【简答题】to make an inquiry
【简答题】to keep inquiry in mind
【简答题】to inquiry about sth
【简答题】分类资料数据录入格式有两种,分别是枚举式和( )