实施输卵管结扎术的合适时期是

A．非孕妇女月经干净后3～7天进行

B．人工流产术后 * * 流血停止时

C．正常产后3～7天周时

D．剖宫产术后2～3周时

E．以上都不对

The worker witnessed ________ seen the accused near the scene of the crime.[ ]

A. to have  

B. to having

C. for having  

D. having