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25. They suggested that the professor ______ just now ______ chairman of the meeting.

A. referring to; was made B. referring to; be made

C. referred to; be made D. referred to; was made

C。

解析:

refer to 與 professor 是動賓關系，所以用過去分詞短語作定語；suggest表“建議”時，其后的賓語從句需用原形虛擬。

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