What you can do is to do what you can.这句话有语法问题么?是否正确、纯正?

What you can do is to do what you can.这句话有语法问题么?是否正确、纯正? what things can’t you do?这句话语法有没有错啊 What classes do you have?这句话语法正确么 What can you do What can you do? What can you do to make your English better?是否与What can you do what you can 还是do what you can do? Can you do what I can do? What I can do is to wish you only What can you do to protect water? Try to do what you can 翻译 Please do what you can to heip the deaf.这句话中的what you can是插入