A. why is it which　　　　　　　　　　　　　　　　　　 B.why it is that

C.who is it which　　　　　　　　　　　　　　　　　　  D.who it is that

从所给的四个选项中选择最佳答案

A: Hello! 8502261．Who is it?

B: ______　　　

[　　]

A．I'm Peter．　　　　B．It's Peter．

C．That's Peter．　　　D．Here's Peter．

____has the children burdened with too much homework nowadays?

　 A．It is who that　　 　　　　 B．Who is it that　　

　 C．It was who that　 　　　　 D．Who was it that

Who is it up 　 decide to hold the meeting at the weekend?

　　　 A．to; for　　 　　 B．for; to　　 　　　 C．to; to　　　　　 　　　　 D．for; for

I don’t know _____________ everyone in my class thinks I’m funny.

A. why is it which　　　　　　　　　　　　　　　　　　 B.why it is that

C.who is it which　　　　　　　　　　　　　　　　　　  D.who it is that