—Peter didn’t e to the meeting this morning.
— I him yesterday, but I was too busy and forgot it.
A. should have told
B. should tell
C. had to tell
D. had told
网友回答
(答案→)A. should have told
B. should tell
C. had to tell
D. had told
解析：考查时态.句意:今天早上彼得没来参加会议.——昨天我应该早点告诉他，但是我太忙，忘了。可知本句描述的现在应该已经完成的动作，故选A。