问题补充：
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：
A. have instructed in
B. have instructed
(答案→)C. have been instructed in
D. are instructed
解析：考查词组和语态：instruct sb.in sth.相当于teach sb.sth，instruct和drivers之间存在被动关系，故只能选择have been instructed in。句意：你能想到司机明显学习过交通规则但是不遵守的一些情况吗？选C。
