When you feel depressed go fly a kite.请问这句话语法有问题吗?

When you feel depressed go fly a kite.请问这句话语法有问题吗? go fly a kite When you feel depressed,think positive thoughts. I do could't feel you care about me这句话有问题吗 语法 请问这句话有语法问题吗? what do you do when you feel depressed? i'm happiest when i'm with you这句话有语法问题吗? If you think that ,ok .You can go fly a kite . 英语填空题（填颜色）when you get depressed ,you feel（ ）a thing like th When will you go to beijing这句话的语法正确吗? when you're gone这句话是不是存在语法问题? do you like to fly a kite=do you want to fly a kite