Tenses 2 : Continuous

I am running now.
You are running now.
We are running now.
The girls are running now.

She is singing now.
He is singing now.
Mother is singing now.
It is singing now.

I was studying at that time.
She was studying at that time.
He was studying at that time.
My brother was studying at that time.

We were studying at that time.
They were studying at that time.
The boys were studying at that time.

I shall be swimming.
We shall be swimming.
Everyone will be swimming.