A-A+
Elizabeth Blackwell the first woman medical d
问题详情
Elizabeth Blackwell, the first woman medical doctor in the United States, founded the New York Infirmary, an institution that have always had a completely female medical staff.此题为多项选择题。请帮忙给出正确答案和分析,谢谢!
参考答案
正确答案:have—has
考查主谓语一致。that引导的定语从句修饰先行词aninstitution,从句主语that指代单数意义的institution,故其谓语也应用动词的单数形式,have应改为has。