问题补充:
President Bush was in Omaha this morning to deliver a speech, but he the city by the time the shooting took place.
A. left
B. had left
C. had been leaving
D. would have left
答案:
A. left
(答案→)B. had left
C. had been leaving
D. would have left
解析:可联系答.案.网客服索取。