试题详情
单项选择 适中0.65 引用1 组卷173
I didnt know his telephone number. ________ it, I ________ then.
A.Had I known; would ring him upB.Should I know; would have rung him up
C.If I knew; would ring him upD.Had I known; would have rung him up
16-17高二·江苏南通·课时练习
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