I will read - He will read
(સાદો ભવિષ્યકાળ )
I will read that book tomorrow.(એ  પુસ્તક હું કાલે વાંચીશ)
He will read that book tomorrow.(તે એ પુસ્તક કાલે વાંચશે )
When (કયારે )
Why (કેમ )
Which (કયું )
How(કેવી રીતે )
Who (કોણ )
Do you play?
Does he play?

 I was -They were

I was happy.
They are happy.

 Was reading -Were reading.

 I was reading .
You were reading.
I had -He had
I had a car.
He had a car.
He wrote He did not write .
Did they play?
Did he play?

 I have written.
He has written.