题目

The manager，it clear to us that he didn’t agree with us， left the meeting room.A. who has made B. having made C. made D. making 答案：【答案】B【解析】句子的主干是“The manager left the meeting room.”用动词的现在分词“having made”表伴随，与主语之间是主动关系。故选B。分解因式：xy2－x=         .