填写单词1.I think we can find their own homes from the ______2.B

填写单词
1.I think we can find their own homes from the ______
2.Because the lights have ______ out,I couldn't go on reading the book.
3.Piano is one of the most popular music ______.
你们解释下为什么填这个啊.
乐器是musical instruments而不是music
而且turn out在这里怎么翻译呢,没有合适的解释啊