问题
选择题
— You ought to have called her yesterday . — Yes , I know I ____ .
A．ought to
B．ought go have
C．ought have done
D．ought to have called
答案
答案：B
简单对话中只重复助动词、系动词和情态动词。如既有情态动词又有系动词或助动词，则两者都重复，不重复行为动词。
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