用被动语态改写下面句子。、 1. Rachel will give you some advice. You ____________________________________________ 2. I sent him a letter. He ____________________________________________ 3. The police officer showed us the way. We ____________________________________________ 4. Our neighbour gave me a lift. I ____________________________________________ 5. We have asked him a favour. He ____________________________________________ 6. She told me a lie. I ____________________________________________ 7. They have written her a postcard. She ____________________________________________ 8. Kerrie will make you a cup of tea. You ____________________________________________ 9. The waiter has not brought us the coffee. We ____________________________________________ 10. They did not offer her a seat. She____________________________________________