【题目】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
在线课程【答案】B
【解析】
试题分析：which引导的句子做know的宾语，句子用陈述语序。句意：改道时，驾驶员应该打开转向灯，
好让其他驾驶员知道他要走那条道。