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职称英语
综合类C级
[单选题]
He works in asports centre [instructing] people in the use of the gym equipment.
A.helping
B.teaching
C.informing
D.ordering
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![He works in asports centre [instructing] people in the use of the gym equipment.](https://img.zhaotiba.com/tiku75/15022008.jpg "He works in asports centre [instructing] people in the use of the gym equipment.")