单项选择题

A.He’s attending a meeting.
B.He’s giving a lecture.
C.He’s speaking on another phone.
D.He’s away on a business trip.
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单项选择题
A.More workers are needed. B.Advertising costs more. C.Workers’ salaries are higher. D.Raw materials are more expensive.
A.More workers are needed.
B.Advertising costs more.
C.Workers’ salaries are higher.
D.Raw materials are more expensive.
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