1. I am happy. I\'m happy.2. You are my friend. You\'re my friend.3. He is in the bedroom. He\'s in the bedroom.4. She is in Year 3. She\'s in Year 3.5. It is a pencil case. It\'s a pencil case.6. They are at school. They\'re at school.При написании краткой формы глагола to be важно не забывать обозначать апостроф.