He your car by mistake because he didn't have the keys.
A. mustn't have taken
B. shouldn't have taken
C. couldn't have taken
D. needn't have taken
网友回答
A. mustn't have taken
B. shouldn't have taken
C. couldn't have taken
D. needn't have taken
解析：从语意“他不可能误开了你的车，因为他没有钥匙”可知，此处应选择couldn't have taken。