Mr. and Mrs.Zhang all work in our school.They live far from the school, and it takes them about a hour and a half to go to work every day. In their spare time, they are interesting in planting vegetables in their garden, that is on the rooftop of their house. They often get up earlier and water the vegetables together. They have also bought for some gardening tools. Beside, they often get some useful informations from the internet. When summer came, they will invite their students pick the vegetables！