2. Fill in the gaps with am, is, are, isn't or aren't. 1. ______ Lize in Year 7? No, she ______. 2. My sister ______ fifteen. She ______ sixteen. 3. Their names ______ John and Paul. They ______ primary school. 4. ______ you good at Maths? Yes, I ______. 5. Cathy and I ______ best friends, but we ______ in the same class.