Tom is the only one of those foreigners who is working in China.这句话有错吗?有"the only"的句子关系词只能用that不能用who吧?但我们试卷上就是这么写的.

问题描述:

Tom is the only one of those foreigners who is working in China.
这句话有错吗?有"the only"的句子关系词只能用that不能用who吧?但我们试卷上就是这么写的.