1 The children are back at school now. They've been on holiday for the summer.2 'Have you ever been to Niagara Falls?' 'No, but I've been to the Great lakes.'3 Bill worked very hard today. He's gone to bed early.4 I've got a lot of money. I've been to the bank today.5 'His car isn't in the garage. I think he's gone away for the day.'2. I'm exhausted. I have been working all day, and I have not finished yet.I visited many countries in the last five years.Someone has taken my books. I have been looking for them for ages, but I can't find them anywhere.I have been shopping all morning, but I have not bought anything yet. I haven't seen anything I've liked.The best book I have ever read is One Hundred Years of Solitude by Gabriel Marquez.A You're filthy! What have you been doing?B I have been working in the garden. I have planted all the vegetables for next year.I have been waiting for two hours, but nobody has arrived yet.