题目

 根据右边提示判断，这一古代帝国是 A.波斯帝国 B.罗马帝国 C.亚历山大帝国 D.拜占廷帝国 答案：   CKevin is supposed _________ at six o’clock, but he hasn’t shown up so far.A. to arrive B. to arriving C. arrive D. arriving