将下列句子改为被动语态：

以下内容选自奥风英语《中考语法完全突破视频教程记忆大纲》
2.被动语态的基本结构：
主语+be +过去分词(+by+动作的发出者）
① 一般现在时：am/is/are+过去分词
如：
Trees are planted every year.
② 现在进行时 am/is/are+ being +过去分词
如：
The road is being repaired.

③ 现在完成时 have/has + been +过去分词
如：
The work has been finished.
④ 一般过去时 was/were + 过去分词
如：
The story was told by him.
Many birds were killed last year.
⑤过去进行时 was/were+ being + 过去分词
如：
The new house was being painted when I got home.
⑥过去完成时 had +been+ 过去分词
如：
He told me that the work had been finished.
⑦一般将来时 will +be + 过去分词
如：
The problem will be discussed tomorrow.
⑧ 过去将来时 would/should +be +过去分词
如：
He said that the Christmas tree would be put up soon.
⑨情态动词的被动语态
情态动词+ be +过去分词
如：
The problem must be solved soon.
Children should be taught to love animals.
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1. Charity work is often talked about by us after class.
   

2. Chopsticks were used to have meals by them.

3. Lives of patients with eye problems were improved by the doctors.

4. The money was put into his pocket by him.
   

5. Has advice on English study often been asked by him?

   或 Is advice on English study often asked by him?

6. Was an interesting story told by the boy just now?

7. Is that boy often helped with his maths by them?

8. Were those people saved from the fire by the firemen?

   不客气