Let's imagine you are taking a walk along the road and you happen to see one or two waste bottles lying on the grass beside the road.What would you do？
    You may have different choices.Firstly，you can leave the bottles there as they are.It was not you who threw them away.Why should you do something about it？This is quite OK.Secondly，you can pick them up and throw them into a dustbin.By doing this，you have walked a slop further to help make our home clean.This action is a better choice.Thirdly，you might want to pick them up and give them to someone who collects waste for a living.If this is your choice，you have walked even further.You're not only thinking about doing something for the environment，you're also developing yourself to be a person who would think of others and help them.
    As for young kids，they may always have such a question： "When do I grow up？" Yes!When does & child grow up？And how can a kid know he or she has grown up？These are interesting questions.As for us，fifteen-year-olds，who are finishing middle school，we're no longer younger children.We should know whether or not we have grown up.When we start to have a sense of offering a helping hand for a cleaner city and greener world，and when we have a loving heart to think more of others than of ourselves and are ready to help them，we can say that we have grown up.
    Remember：If we help others，others will help us.If we do our best for nature，nature will offer its best to us in return!

（1）How many choices are there in Paragraph 2？

Three.

Three.

（2）Who can you give die bottles to in the third choice？

Someone who collects waste for a living.

Someone who collects waste for a living.

（3）What does the writer think of the questions about growing up？

These are interesting questions.

These are interesting questions.

（4）What will nature do if we do our best for nature？

Nature will offer its best to us in return.

Nature will offer its best to us in return.