1. We'd like to buy some oranges. (改为一般疑问句) 2. This French book must be Mary's. (改为否定句) 3. It seems that she has changed a lot. (改为同义句) 4. Why don't you join an English club to practice speaking English? (改为同义句) 5. It is so hard that we can't understand the sentences. (改为简单句)
答案: 1. Would you like to buy some oranges? 2. This book can't be Mary' s. 3. She seems to have changed a lot. 4, Why not join an English club to practice speaking English? 5. It is too hard for us to understand the sentences.