Сmake four questions to these answers: - yes, rex had become yellow. - yes, rex had lain on the sofa. - yes, rex had slept on the sofa. - yes, i had hung the blouse on the armchair.

1) Had Rex become yellow?
2)Had Rex lain on the sofa?
3)Had Rex slept on the sofa?
4)Had you hung the blouse on the armchair?