They have been living in the city since they were born.(改为一般疑问句)三个空living in the city since they were born?
问题描述:
They have been living in the city since they were born.(改为一般疑问句)
三个空living in the city since they were born?
答
Have they Been living in the city since they were born?
答
have they been
答
have they been living in the city since they were born?