Ken's, потому что whose переводится как "чей", а Ken's - это притяжательная форма имени
Там Auen мальчик в нашем классе
It was my birthday so we go in the cinema
Owr family is very big and friendly
First we go to the beautiful park
Next we go at the cafe
At that moment we are playing an interesting game. After that we ate a very tasty food.
Finely we are going on the amazing party.
I think that my birthday was wonderful.