The sale usually takes place outside the house ，with the audience on benches，chairs or box

The sale usually takes place outside the house ，with the audience on benches， chairs or boxes。
A. having seated
B. to seat
C. seated
D. seating

A. having seated B. to seat(答案→)C. seatedD. seating解析：考查非谓语动词。sit 是主动，如果用seat就是被动，因为sit是动态的“坐”，而seat是表状态，静态的坐，所以正确的表达应该是sb be seated on sth。所以这里主要表状态，用的seat，就要用过去分词。选C。

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