He could not find ______ a piece of paper. A. either a pen or B. neither a pen nor
问题描述：
He could not find ______ a piece of paper. A. either a pen or B. neither a pen nor
选哪个?还是都有问题?
答
A
解析：如果是B的话,前面有Not,就是双重否定,就是肯定,不符合句意.