gs collect rainwater and then use it in various ways, such as giving water to plants. Do you think such huildings will become more common in the future? I think that such buildings will become more common in the future. I have two reasons to support this opinion. First, rainwater is free, so if we can change rainwater to drinking water. The number of people who live in such buildings doesn’t pay money to drinking water. Second, when disaster happens, we can use it as a emergency drinking water.Actually my school stocks rainwater for emergency situation. In conclusion I think that such buildings stocking rainwater like my school will become more common in the future.