sat 语法挑错题 isegeorge thornton emmons was one of a handful of ethnographers who committed their life to studying the tlingit culture of the northwest coast.their life 有错么？

sat 语法挑错题 ise
george thornton emmons was one of a handful of ethnographers who committed their life to studying the tlingit culture of the northwest coast.
their life 有错么？