This spring, our teacher suggested we should do a green project and plant some trees around the school. Everyone thought it was  great idea, so we started looking online for the best trees to buy. But we soon found that  (choose) trees was not that easy. Our teacher suggested that we should look for trees that grew  (natural) in our part of the world. That way, the trees would be more suitable  the wildlife here. We learnt that trees are the (happy) when they have room to grow, with plenty of space for their branches. The trees might get (damage) close to the school playgrounds, for example. So we tried to avoid areas where students were very active. Finally, we found a quiet corner close to the school garden – perfect! Later we all  (take) turns to check the trees regularly and make sure they had no strange spots or marks on the  (leaf). We all knew that we wouldn't be at the school anymore by the time the trees grew tall, and that was a bit sad.  we'd planted the trees to benefit not only the environment, but also future students at the school. We knew they'd get as much pleasure from them as we had. And that  (think) really cheered us up!