．It only take her three days before she found herself to be with her new co-workersA. at a

问题补充：

．It only take her three days before she found herself to be with her new co-workers

A. at a harmony

B. at harmony

C. in a harmony

D. in harmony

答案：

A. at a harmony

B. at harmony

C. in a harmony

(答案→)D. in harmony

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