—You ought to have called him yesterday．—Yes I know I．A. ought toB. have toC. should haveD

问题补充：

—You ought to have called him yesterday．

—Yes，I know I．

A. ought to

B. have to

C. should have

D. must have

答案：

A. ought to

B. have to

(答案→)C. should have

D. must have

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