Make up tag questions 1) you have got a telephone, 2) he can speak english very well, 3) they will come at 12 o'clock , 4) there is a ruler in the pencil box ,

You have got a telephone, haven't you?
He can speak English very well, can't he?
They will come at 12 o'clock, won't they?
There is a ruler in the pencil box, isn't there?