Ididn'tknowhistelephonenumber．_____

发布时间：2020-07-27 08:40:50

I didn't know his telephone number．________ it, I ________ then．A.If I had known; would have rung him upB.Should I know; would have rung him upC.If I knew; would ring him upD.Had I known; would ring him up

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A
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