1. This is my sister. (变为复数句) 2. He is twelve years old. (对划线部分提问) 3. Danny can fly a kite. (改为一般疑问句) 4. I have two chairs. (改为否定句) 5. Li Ming and Jenny want to go shopping today. (对划线部分提问) 6. It's 6:40 now. (对划线部分提问) 7. The book is under the desk. (对划线部分提问) 8. May I take your picture? (作否定回答) 9. Walk quickly,please. (改为否定句) 10. Are you hungry? (作肯定回答)
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