完成下列同义句变化。 1.—I'm sorry I'm late again. —That's all right. —I'm sorry I'm late again. —It ______. 2. Our school has twenty classes. ______ twenty classes ______ our school. 3. These children walk to school every day. These children ______ to school ______ every day. 4. Thank you very much for your help. Thanks ______ for ______me. 5.Your trousers are very dear. They are nice, too. Your trousers are ______ dear ______ nice.