】几道关于分词做定语,表语和状语等的选择题!

】几道关于分词做定语,表语和状语等的选择题!
最好能帮我解释一下为什么这项可以!
1.It was so cold that he kept the fire ( ) all night.
A.to burn B.burn C.burning D.burned
2.She's upstairs ( ) letters
A.writes B.is writing C.write D.writing
3."Can't you read?" Mary said ( ) to the notice.
A.angrily pointing B.and point angrily
C.angrily pointed D.and angrily pointing
4.This is one of the books ( ) by him now.
A.to be written B.being written
C.having been written D.is been written
5.( ) anything about the accident,he went to work as usual.
A.Not known B.Known not C.Knowing not D.Not knowing
6.( ) a child,Elizabeth enjoyed studying art and music.
A.She was B.When wan C.When being D.Being