WhatafoolI'vebeen!Why________Ithi

发布时间：2020-08-03 11:22:59

What a fool I've been!Why ________ I think of that before?A.notB.don'tC.didn'tD.do

网友回答

C解析因为有句型Why not do sth．，而且before要用didn't，而若选A
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