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.