3.
对的写正确,错的写错误。 Where is my key?
Bill: Mum, what are you looking for?
Mum: My key. Do you know where it is?
Bill: Sorry, I don’t know. Is it in your bag?
Mum: No, it isn’t.
Bill: Is it on the desk?
Mum: No, it isn’t.
Bill: Is it under the chair?
Mum: No, it isn’t.
Bill: Is it behind the door? Let me see. Err...Mum, look, it’s on the door! You are so forgetful!
Mum: ...