单项选择题

（） in the office had a mistake, and the firm regretted causing the customer inconvenience.

A. Someone
B. Some
C. Anyone
D. One

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单项选择题
Advertising media like direct mail, radio, television and newspapers（）to increase the sales of industrial products.

A. have been used
B. will be used
C. is being used
D. has been used
单项选择题
How many soldiers were killed on August 3（）

A.14.
B. 9.
C. 6.
D. 3.
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