问题标题:
Theoldman____(whom/that)teacheschemistryinacollegeisaprofessor.
更新时间:2024-05-12 03:14:56
问题描述:

Theoldman____(whom/that)teacheschemistryinacollegeisaprofessor.

沈祖梁回答:
  whom(用于人)
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