A-A+ While ______ in the supermarket I met an old 2022-08-05 17:27:05 问答库 阅读 170 次 问题详情 While ______ in the supermarket, I met an old friend of mine.A．being shopB．shopC．shoppingD．shopped请帮忙给出正确答案和分析，谢谢！ 参考答案 正确答案：C
