—We expected you yesterday.
—I’m sorry，I you to say that I couldn’t be here until today.
A. should have called
B. must have called
C. could call
D. would call
网友回答
(答案→)A. should have called
B. must have called
C. could call
D. would call
解析：
句意为：——我们昨天在等你。——对不起，我应该打电话告诉你我今天才能到。should have done表示过去应该做的事却没做。