She necklaces with the help of Ms Sullivan when she that she had made some mistakes.
A. was working, was noticing
B. made, was noticing
C. made, noticed
D. was making, noticed
网友回答
A. was working, was noticing
B. made, was noticing
C. made, noticed
(答案→)D. was making, noticed
解析：考查时态。句意：当她注意到增加已经犯了一些错误的时候，她正在Ms Sullivan的帮助之下做项链。根据句意说明是在过去的某个时间点上正在进行，正在发生的事情，故使用过去进行时。故D正确。