在下列句子中，有些需要改成主动语态，有些则应保持被动语态。请

题目描述

在下列句子中，有些需要改成主动语态，有些则应保持被动语态。请酌情修改：1.Executives have been fired in the past for mismanaging press con—terenees.2.Executives are sent by some companies to conferences on handling television interviews.3.The press cannot be avoided by people in business.4.The oil industry has been forced to be more responsive to the press.5.The chaRenge to public debate has been met successful bv manv executives·6.The topic of business and the press has been chosen for us for the conference theme.7.Business is too often called a dull beat by reporters.8.The power and superficiality of television are objected to by business managers·9.High positions are often reached by executives without gaining experience in talking to the press.10.Today，information that was once kept secret by business is demanded by the press.