翻译以下短语并完成句子。

1. be buried alive ____

2.  bury sth. in... ____

3. bury one's face in hands ____

4. bury oneself in/be buried in____

5.  Many men were____underground when there was an accident at the time.

     矿山发生意外事故时,许多矿工被埋在地下.

6.  He walked slowly,  his hands   _____ in his pockets.

     他走的很慢,两手插在衣袋里.

7.  She sat there,____in thought.

     他坐在那里陷入沉思.