WH Clarification is used for explanation or making announcements. It is not a question. Also, WH Clarification is placed in the middle of the sentence.
Because = Why
By = How
They happy why? they finish work.
(They are happy because they are done with work.)
My dog healthy how? Eat fish.
(My dog stays healthy by eating fish.)
I here at restaurant where? Near school.
(I am here at the restaurant near school.)
This book name what? Big.
(This book is called “Big”.)
Bike or car which better? Bike.
(Which is better, a bike or a car? A bike.)
I video chat with who? My friend.
(I video chat with my friend.)
There have event when? tomorrow.
(There will be an event tomorrow.)