Only after Mary read her article a second time the spelling mistakes.
A. did she notice
B. she noticed
C. does she notice
D. she has noticed
网友回答
(答案→)A. did she notice
B. she noticed
C. does she notice
D. she has noticed
解析：
试题分析: 考查倒装句。Only +状语 位于句首时后面用部分倒装；从Mary read 可知句子是过去时态，所以A选项正确。句意：直到又读了一遍自己的文章，她才发现了那些拼写错误。