He ________ a college graduate but he knew nothing of history．
A.was supposed to be
B.supposed to be
C.was thought of to be
D.thought to be
网友回答
A解析根据题意“据说他是个大学毕业生，可是他对历史一窍不通”。be was supposed to be意为“被认为，被看作是”。如：The speaker is supposed to be excellent．演讲人据说(被认为)是很出色的。