1.Our teacher is going to marry next Friday. Have you got any idea ______the wedding party is to be held?
A. what B. which C. that D. where
2.There was a fierce debate about ______ we should go on with experiments on creating new life.
A. which B. what C. that D. whether
3.Helping others is a habit, ______ you can learn even at an early age.
A. it B. that C. what D. one
