删去下列句子中不必要的成分，把句子改写得更简洁。1)She

题目描述

删去下列句子中不必要的成分，把句子改写得更简洁。1)She has resigned from her post as invoice elerk.2)One way out of the difficulty still remains open.3)In the event of your wishing me to do so，I will call on you next week4)I have been unable to reply before owing to the fact that I have only just returned from abroad.5)The two assistants were mutually antagonistic to each other.6)His appointment dates as and from March 1.7)The two vehicles collided with each other at considerable speed.8)The true facts of the situation are not yet in our possession.9)As a short-hand writer she has attained a high standard of perfection.10)I asked him to call and see me。but he declined to accept my invitation.11)His future prospects were not very promising.12)As chairman of three different companies he possessed very unique experience.13)The surrounding circumstances do not justify an advance of more than￡2 000.14)The company has a complete monopoly of the market.15)We were warmly welcomed as soon as we entered into the room.16)Descending down the staircase she slipped and hurt herself.17)The repairs you asked us to carry out are now quite completed.18)The production of cassette tapes has now reached a high degree of perfection.19)We enclose herewith a copy of the report.20)We managed to trace the original source of the quotation.