. You’re so tired. We should have driven the car .A. by turnB. in turnC. in turnsD. on tu

问题补充：

. You’re so tired. We should have driven the car .

A. by turn

B. in turn

C. in turns

D. on turn

答案：

A. by turn

(答案→)B. in turn

C. in turns

D. on turn

解析：短语辨析。by turn 逐个的； in turn 轮流，依次；in turns 无此用法；on turn无此用法。句意：你太累了，我们应该轮流开车。结合语境可知选B。