—Peter didn’t come to the meeting this morning— I him yesterday but I was too busy an

问题补充：

—Peter didn’t come to the meeting this morning.

— I him yesterday, but I was too busy and forgot it.

A. should tell

B. should have told

C. had to tell

D. had told

答案：

A. should tell

(答案→)B. should have told

C. had to tell

D. had told

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