The problem is _____ has caused us a lot of trouble.
______ , the players began the game.
— I phoned you yesterday morning. A girl answered, but I didn’t recognize the voice. — Oh, it ____ my younger sister. She was in my room at that moment.
The old woman who______in the deserted house alone for ten years has been settled in a nursing home now.
The new buyer identified a dozen new sources for the material, ___________ proved to be reliable.
_____ I say Clancy is a smart boy, he still needs to work hard to achieve his goal.