Question

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

Answer 1

答案：A
解析：

A　题意是“瓦特先生应该八点半到会，但是，他没到”。这是一个带有含蓄条件句的虚拟语气。C项错，因为无此形式；should + have done表示过去应该干，但是没有干；should be doing 表示现在应该正干某事。A项符合本题要求。