Put the sentences in the correct order.

• - Who's this? -
• - Alvin, be careful. -
• - And this is my mum, Kim. -
• - How old is he? -
• - Oh no! My mum's here. -
• - Look! This is my dad, Chin. -
• - Erlina! Help! -
• - This is my brother, Wen. He's a singer. -
• - He's nineteen. -