引气渗漏探测系统划分为3个环路，以下哪个不是环路保护的区域

If he had not gone out in the storm （）          .

The boy acted     （）       he had never lived in Canada before.

He demanded that the laboratory report （）    immediately after the experiment was done.

He is not （）        a fool   （）     .

A steel plant is a place      （）   I am longing to visit these years.

Do you know who lives in the building   （）       there is a well.

She had three sons, all   （）       became doctors.

I, （） your good friend, will try my best to help you out.

Did she tell you anything （）        had happened to her?

My hometown is no longer the same      （）    it used to be.