问题
选择题
—Peter didn’t come 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
答案
答案：A
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。