While I was walking in the field,I saw him running.

While there is life there is hope.

White Elephant = A very costly or troublesome possession

Who could count my love for you?

Who was seen on the road by you?

Who will save us? (Passive) = By whom will we be saved?

Why he has done it is a mystery.

Why you have done this? =  Why have you done this?

will have finished

Will have the Moon been seen by you?

will, go

Witch= Wizard

with

Without Studying well you cannot be successful - If you do not study well, you will not get good marks in the exam.

would have run