Help others whenever you can _______ you will earn respect from others without difficulty

It’s a pity that Mr. Smith died last night. — Really? The police may never discover what ______ that night, for he was the only eyewitness (目击者).[ ]

Our club is open to adults only.________your children have entered without permission.

I won’t share a bedroom_______ you and I ‘d like a room_______ my own.

From Legal Today, a girl of four fell from an 8-story-building dead while she___at her house.