A. when          
B. until            
C. since        
D. before

A. where
B. when
C. in which
D. what

下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏字符号(^)，并在其下面写上该加的词。
删除：把多余的词用斜线(＼)划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
注意：1.每处错误及其修改均仅限一词；
            2.只允许修改l0处，多者(从第ll处起)不计分。

     I like music very much, pop songs particularly. Every evening then I am doing homework and at
weekends when I at home, I always play some of my favorite songs on my tape recorder. The familiar
patterns of notes attracts me into the colourfully world of music. Now and then I stopped to follow the
songs. Sometimes, my mother comes in, asking me to fix my attention to my homework. She does not
like the pop music. Like most grown-ups, she enjoys folk songs, because the peaceful music reminds
her of their beautiful life when she was young. It is a truth which people of different age understand music
differently and enjoy different kinds of music.
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A. when; as     
B. how; as      
C. how; when
D. how; while