问题
选择题
Ju Hua Tai is a popular song among young people, ___were often heard singing it in Karaoke.
A．which
B．who
C．that
D．what
答案
B
考察定语从句。一旦判定为定语从句，就应该排除what ,又因为非限定性，所以排除that .因为先行词是young people 所以选who.
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