Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

I am a mother. However, I never give birth.

I am a father. However, I never nurse my children.

Wandering is not possible for me, but standing still happens occurs rarely.

Who am I?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

Which country gets ill every time?

What can you serve, but never eat?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

What's the only room from which no one can enter or leave

A quarter is one-fourth of a dollar but Mr. John has changed the equation as below :

DOLLAR * 4 = QUARTER

Can you replace each letter with a digit to make the above solution correct?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?