问题补充：
Later I found that I the clothes because they had not been worn at all.
A. shouldn’t have washed
B. mustn’t have washed
C. couldn’t have washed
D. needn’t have washed
答案：
A. shouldn’t have washed
B. mustn’t have washed
C. couldn’t have washed
(答案→)D. needn’t have washed
解析：可联系答.案.网客服索取。
