Can you think of some cases where drivers obviously ________ the traffic rules but don’t obey them?

A.have instructed in

B.have instructed

C.have been instructed in

D.are instructed

答案及解析： C

解析：

instruct sb．in sth．相当于teach sb．sth．instruct同drivers之间存在被动关系，故只能选择have been instructed in。