1. How often do you go to shopping?= How often do you go shopping?

I sometimes go to shopping.= I sometimes go shopping.

2. How often do you study English?
I study English every day.

3. How often does he visit his parents house?
He visits his parents house once a month.

4. How often does she clean up her house?
She cleans up her house every day.

5. How often do they go on picnic?
They go on picnic every month.