Question

— You ought to have called her yesterday .
— Yes , I know I ____ .

A．ought to

B．ought to have

C．ought have done

D．ought to have called

Answer 1

B。

简单对话中，只重复助动、系动词和情态动词，如既有情态动词，又有助动词或系动词，则两者都重复，不重复行为动词。