there is / are
There are three desks in my room.
How many desks are there in your room?
My sister never gets up at 9 am.
How often does your sister get up at 9 am?
We're reading a horror book now.
What are you reading?
Yesterday it was sunny and hot.
What was the weather like yesterday?
No, there isn't. There isn't a poster on my wall.
Is there a poster on your wall?
No, I don't. I hate strawberries.
Do you like strawberries?
No, he isn't. He isn't swimming at the moment.
Is your brother swimming?
Yes, I was. I was at the park last Sunday.
Were you at the park last Sunday?
Are there any books on the shelf?
Yes, she does. She works at the hospital.
Does she work at the hospital?
The students are going to the museum now.
Where are the students going?
No, they weren't. My parents weren't at the park last night.
Were your parents at the park last night?
There is a calculator next to the lamp.
My grandfather goes to the supermarket on Saturdays.
When does your grandfather go to the supermarket?
Yes, they are. They are playing football.
Are they playing football now?
How many children were there at the party?