they were here yesterday?改句子改成用did开头的疑问句再改成用when开头的问句
问题描述:
they were here yesterday?改句子
改成用did开头的疑问句
再改成用when开头的问句
答
they were here yesterday?改句子
改成用did开头的疑问句
再改成用when开头的问句