_____ the diamond, he had to look for a place to hide it.
__________ parents say and do has a life-long effect on their children.
__________ matters most in learning English is enough practice.
Choosing the right dictionary depends on __________ you want to use it for.
Having checked the doors were closed, and ___ all the lights were off, the boy opened the door to his bedroom.
It is none of your business __________ other people think about you. Believe yourself.