__________is your father?
He's an engineer in a big factory.( )
A.WhoB.WhatC.WhichD.Where
We all need partners _______.
The river is too wide for the swimmers _______________.
I am happy with my old friends today.
The policeman asked us _____him send the old man to the hospital.
()If there _____ no buying and selling of animals, there will be no killing in nature.