What is the largest city in the world?

The largest city in the world is Beijing.

Who is the most popular singer in your country?

The most popular singer in my country is Egor Krid.

What is the most expensive thing you have ever bought?

The most expensive thing I've ever bought is my telephone

Who is the smartest person you have ever known?

The smartest person I've ever known is Steve Jobs

What was the most difficult subject for you at school?

The most difficult subject for me at school was Mathematic.

What was the most exciting book you read in childhood?

The most exciting book I read in childhood was "Indiana Jones and the Raiders of the Lost Ark"

What is the happiest day in the your life?

The happiest day in my life is my birthday.