He your car by mistake because he didn't have the keys.A. mustn't have takenB. shouldn't

问题补充：

He your car by mistake because he didn have the keys.

A. mustn have taken

B. shouldn have taken

C. couldn have taken

D. needn have taken

答案：

A. mustn have taken

B. shouldn have taken

C. couldn have taken

D. needn 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 have taken。