_____ in a poor family made Jack very hardworking when he was still young.
The book, _______ is blue, is mine.
_____ the watch and see if you can find out what’s wrong with it.
John is a good swimmer, but I don’t like the way ____ he always shows off in front of everyone.
_____ you understand the rules of the game, you will enjoy it.
The child asked his mother ______ go out to play tennis.