根据答句写问句（七年级英语）They are in Class One.
问题描述：
根据答句写问句（七年级英语）
They are in Class One.
答
What class are they in?
答
Which class are they in？
或者
Who are in Class One ？
答
Which class are they in
在一定范围内选择应用which表示“哪一个”,而what是“什么”.
答
which class are they in?