一道英语易错题求解析1,Mary has alaways been doing well in the company,

选A.all expenses paid是独立主格结构作方式状语,相当于with all the expenses paid
附录：独立主格结构
一 独立主格结构的构成
名/代+现在分词/过去分词
名/代+形容词/副词
名/代+不定式
名/代+介词短语
with+上述结构
二 独立主格结构的特点
1.独立主格结构的逻辑主语与句子的主语不同,它独立存在.
2.名词或代词后的分词,形容词,分词,不定式,介词等是主谓关系.
3.独立主格结构一般有逗号与主句分开.
The test finished,we began our holiday.=When the test was finished,we began our holiday.
The president murdered,the whole country was in deep sorrow.=After the president was murdered,the whole country was in deep sorrow.
Whether permitting,we are going to visit you tomorrow.
This done,we went home.
The meeting gone over,everyone tried to go home earlier.
He came into the room,his ears red with cold.
He came out of the library,a large book underhis arm.
You mustn't sit with your feet pointing at another person.
He lay on his back,with his hands crossed under his head.
He entered the room,with his nose red with cold.
She did the experiment with the door closed.
The boy headed home,with his schoolbag on his back.
He climbed in,with a sword in his hand.
He fell asleep with the radio on.
With class over,the students ran out of the classroom.
With the new term to begin soon,we'll be very busy again.
注：1.独立主格中的形容词、副词、介词短语表状态.
2.独立主格中的不定式表未来动作.
3.独立主格中的现在分词表主动的动作.
4.独立主格中的过去分词表被动的动作,但也可用现在分词完成式的被动形式表被动的动作.
Spring having been here,they still haven't got ready for sewing.
The book having been published,the students will benefit a lot from it.

选A
all expenses paid 独立主格结构 作 方式状语 相当于with all the expenses paid
独立主格结构（Absolute Phrase）由两部分组成，前一部分是名词或者代词，后一部分是非谓语动词(不定式、动名词和分词)或形容词、副词、名词或介词短语。