根据句意及首字母提示完成单词拼写。

1. All of us are s______ to hear that bad news.

2. I lost my knife. I looked for it e______ but I can't find it.

3. The window is b______. We need to repair it.

4. It's too dark in your study. Please turn on the table l______.

5. Today many things are made of p______, for example, bottles, plates, bowls and so on.

下列物质可以造成法定职业性肿瘤的职业性致癌物质是( )。

A．汽油

B．酒精

C．石棉

D．食盐