问题
选择题
Mr. White _______ at 8:30 for the meeting, but he didn’t show up.
A．should have arrived
B．should arrive
C．should have had arrived
D．should be arriving
答案
A
首先排除D项，因为无此形式；should+动词原形表示现在或将来应该；should+be doing表示现在应该正做某事；should have+过去分词表示过去本该做某事而未做。根据题意，A项符合
本题要求。