Resposta :
a) To practice. He
He is practicing
b) To write. They
They are writting
c) To do. You
You are doing
d) To turn. I
I am turning
e) To study.She
She is studying
1) To try. We
We are trying
g) To sleep. They
They are sleeping
h) To run. She
She is running
i) To lie. She
She is lying
j) To swim. It
It is swimming