whoisitusedby一般怎么回答

　　'Who is it?' he called. — 'It's your neighbor.'

　　“是谁啊？”他问道。——“是你的邻居。”

　　Now who is it you want us to look at?

　　你想要我们看谁？

　　Who is it? Is he still in the house?

　　谁开的枪？还在这房子里吗？

　　'That's good,' he said. 'Who is it?'

　　他说：太好了，是谁？

　　How'd you get this picture? Who is it?

　　你怎么有这张照片？是谁？