Mr. White at 8:30 for the meeting but he didn’t show up.A. should have arrivedB. should

问题补充：

Mr. White at 8:30 for the meeting, but he didn’t show up.A. should have arrivedB. should arriveC. should have had arrivedD. should be arriving

答案：

表示本应该做但却没有做的事，用should have done表示。