These sentence is right,please
One She is only four,but she can swims very well.Two you neendn't clean the window.Three My grandmother is over sixty,but she still looks quite young.Four Miss Lin is a famous nurse with a warm heart.

Question

These sentence  is right,please
One She is only four,but she can swims very well.Two you neendn't clean the window.Three My grandmother is over sixty,but she still looks quite young.Four Miss Lin is a famous nurse with a warm heart.

Answer

I think this is correct. 
One, she is only four, but she can swim very well.Two, you don't need to clean the window.Three, my grandmother is above sixty, but she still looks quite young. Four, miss Lin is a famous nurse with a warm heart.

Answer

she can swim
in place of needn't you may say -- don't have to clean