【題目】Last night, my dad showed me something special that I had never seen before. It was 【1】 old box which contained many silver coins. My dad has been collecting old silver coins 【2】 he was a kid. But I didn’t know 【3】 he had put all his coins he showed them to me. He said his father used to do the same. He decided to give me his collection when I was to move out to live 【4】 my own. I knew the 【5】(choose) I made was a difficult one, but I wanted to do things by myself.
【4】獨立生活live on my own，填介詞 on。