Who has a new big house?这句话正确吗?

正确
再问： got不要加咯？ have？
再答： 应该有 got What have they got in their flat?
再问： 第一句对，第二句错 是不是？ They have (an old clock) in their flat. 括号里的划线提问，应该怎么写
再答： 第一句对，第二句错 They have (an old clock) in their flat. 提问 What do they have in their flat? （这个用法多） 或 What have they got in their flat?