读“江苏三大名石”图及相关资料，回答下列问题。

雨花石	昆石	太湖石
出自江苏南京及其周边地区的雨花台砾石层。	产于江苏昆山，由地下深处的二氧化硅热熔液，侵入到断层破碎带内，冷却后形成网络状白色石英。	因盛产于太湖地区而古今闻名，主要是石灰岩。

    I was on my way home with a friend yesterday ____ I found a mobile phone by the roadside. After picking it up, I suggested that we go to the house in front of which we found the mobile phone. And we did so. I ____ (knock) at the door and two young men answered. Neither of them had lost ____(they) phones, but as I referred to some names on the contact list(通讯录), one of them said he also had those ____(name) and that it must be the phone of one____their friends. Then, he took the phone and said how wonderful it was that I took the time____(find) the owner. Afterwards, I left without ____(leave) my name or address. I never considered keeping the phone. Instead, I immediately tried to find ____ owner. And I believed that was ____(exact) what I would want someone to do if I lost my phone. It couldn't have been ____ (good).

    Sometimes, helping others is just doing the right thing.

根据句意及汉语提示完成句子。