问题详情

Mary: What are you working on？ Susan: I"m doing some embroidery. Mary: ______ Susan: I don"t do very much, just for very special occasions.
A．I didn"t know you did needlework.
B．I think you have done a good job.
C．Where did you learn to do needlework？
D．Why do you do needlework？请帮忙给出正确答案和分析，谢谢！