The sisters ... their beds in the morning. a) make b)

The sisters make their beds in the morning. Сестры застилают свои постели днем.
Make a bed застелить постель.
Present Simple употребляется для обозначения обычных, часто повторяющихся или неизменных деяний.

The sisters dont make their beds in the morning.
Do the sisters make their beds in the morning?
When do the sisters make their beds?
What do the sisters do in the morning?
Who makes the beds in the morning?
Do the brothers or sisters make their beds in the morning?
The sisters make their beds in the morning, dont they?