I won’t leave them alone when my parents are old, it is my turn to return their love.

My mother always plays the jokes on me that if they were old, would I raise them. Then I promise my mother that I will not leave them. My parents are the best parents in the world, they give me what I want and take care of me carefully. So I won’t leave them alone when they are old, it is my turn to return their love. 
我的妈妈总是对我开玩笑说如果他们老了，我会照顾他们吗。然后我就会承诺妈妈说我不会离开他们。我的父母是世界上最好的父母，他们给予我想要的一切，细心照顾着我。因此当他们老了，我不会离开他们，是时候回报他们的爱了。