If I knew the answer, I wouldn't be asking, ______

题库:英语 类型:最佳选择题 时间:2017-07-03 02:42:48 免费下载:《单项选择》Word试卷

If I knew the answer, I wouldn't be asking, ______
A.didn't I
B.did I
C.would I
D.wouldn't I

本题关键词:肛I,石I鱼,因子I,I因子,I导联,I度烧伤,I类抗原,I期愈合,I类分子,I类环境;