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.
2. It is dangerous to go out alone at night.
3. It is dark in the room.
4. There was a storm last night.
5. Was there a rain yesterday?