This pen is mine.

This is my cat.

This cat is mine.

This is Ram’s book.

This book is Ram’s. /
This book belongs to Ram.

This story is someone else’s. /
This story belongs to someone else.

With whom are the children?

Mom doesn’t have money.

Whose father is he?

Which girl’s father is he? /
He is the father of which girl?

From which city are you? /
Which city are you from?

From where are you? /
Where are you from?

In which city are you? / Which city are you in?

One day, I will have a Mercedes car.

How long were you in the office? /
Until when were you there in the office?
{You can also use “Till what time” instead of “How long” in this sentence.}

Since when has he been in the office?

Ravi is asleep at home.

Ravi is awake at this time.

Ravi is sitting at this time.

I am sitting in the class.

Ravi is standing at this time.

The pen is bent.

This thing is written in my book.

This thing is printed in this book.

A man is dead on the road. /
There is a man dead on the road.