When changing lanes, a driver should use his turning signal to let other drivers know .
A. he is entering which lane
B. which lane he is entering
C. is he entering which lane
D. which lane is he entering
网友回答
A. he is entering which lane
(答案→)B. which lane he is entering
C. is he entering which lane
D. which lane is he entering
解析：句意：当司机在变换行走路线时，司机应该用信号灯让其他的人知道他在进入另一线路。这里是which lane引导的宾语从句，从句的语序应是陈述语序。故选B。