I don’t know why . A. my sister Mary was laughing B. did my sister Mary laugh C. my si——青夏教育精英家教网—

摘要：I don’t know why . A. my sister Mary was laughing B. did my sister Mary laugh C. my sister Mary laughing D.was my sister Mary laughing

网址：http://m.1010jiajiao.com/timu3_id_2532694[举报]

I don’t know why ___________.

A. my sister Mary was laughing

B. did my sister Mary laugh

C. my sister Mary laughing

D.was my sister Mary laughing

试题分类