Put the paragraphs in proper order to form an IPS style story. (Write down the corresponding letters in order.) A. Trump is the fourth US president ever to face such an inquiry. Notable among them are Bill Clinton and Richard Nixon. B. Speaker Nancy Pelosi on Tuesday has set in motion a formal impeachment ( 弹劾 ) inquiry by the House of Representatives against President Donald Trump for betraying the oath of office and national security. C. The proceedings will turn up the heat on the 2020 election campaign. Both Trump and Biden are in the dock. D. The allegations ( 指控 ) , aided by a whistleblower ( 举报人 ) complaint from the intelligence, accused Trump of pressuring Ukraine President Volodymyr Zelensky over a phone call to probe corruption charges against his 2020 rival Joe Biden, former vice president, and his son Hunter. $400 million of military aid to Ukraine was withheld, allegedly as leverage ( 筹码 ) . E. Soon, the House floor will vote on articles of impeachment, based on the findings of six congressional committees. If such a resolution is passed, the Senate will hold a trial, with a two-thirds majority required to remove the president. F. Trump, however, protested his absolute innocence and agreed to reveal the transcript of the “ friendly ” conversation.