把下面句子合并为带状语从句的复合句 急,在线等!
1.The man was very angry.His face turned white.
请问可不可以改为：The man was very angry so his face turned white.
2.The thief ran away quickly.He feared to be caught by the policeman.
请问可不可以改为：The thief ran away quickly because he feared to be caught by the policeman.
3.They decided to set out.It was late.
可不可以改成：They decided to set out although it was late.
4.She was going home from school.She suddenly met Tom.
可不可以改为：When she was going home from school.,she suddenly met Tom.
请大家帮我判断一下,并说明理由,谢谢啦!