1 Have Mr and Mrs Brown (planted) the garden? Yes, they have.
2. Has Mrs Simpson (bought) a new car? Yes, she has.
3 Has Mr Green (pianted) the door? Yes, he has.
4 Have Mr and Mrs Jackson (changed) the windows? Yes, they have.
5 Has Mr Vince (bought) a dog? Yes, he has.
6. Have Mr and Mrs Alexander (decorated) the trees near their house? Yes, they have.