What can you do to protect the environment?

Stop throwing litter. sell a car and buy a bicycle. stop smoking. implement recycling technology. help animals and plants. build safe zones to protect it.

They build  houses  every  year. they are building a house now. they will  built  this house next year. by the time  she  comes,  they have already  built  a house. when he arrived in  this city,  they … какая-то ошибка в варианте