请问He used to run downstairs at school.针对谓语该怎样提问?
问题描述:
请问He used to run downstairs at school.针对谓语该怎样提问?
答
Did he used to run downstairs at school?
请问He used to run downstairs at school.针对谓语该怎样提问?
Did he used to run downstairs at school?