1 I read a book every day.
I am reading a book now.
I read a book yesterday.
I was reading a book at 12 o'clock yesterday.
I will read a book tomorrow.

2
She plays football once a week.
She is playing football at present.
She played football last Sunday.
She was playing football all day long.
She will play football next Monday.

3
My sister goes to school every day.
My sister is going to school now.
My sister went to school yesterday.
My sister was going to school at 9 o'clock yesterday.
My sister will go to school tomorrow.

4
My mother cleans a room twice a week.
My mother is cleaning a room now.
My mother cleaned a room last Saturday.
My mother was cleaning a room all the time .
My mother will clean a room next Sunday.

5
My niece often writes an essay .
My niece is writing an essay now.
My niece wrote an essay last week.
My niece was writing an essay from Tuesday till Friday.
My niece will write an essay tomorrow.