In this task, you will be shown a passage. You need to write a fill-in-the-gap question based on your understanding of the events that might be inferred from the passage. Your question should be answerable based on the passage and only have one correct answer. Show the gap in your question with a _ .

Floyd Mayweather has revealed that Andre Berto will be his 49th opponent when the champion returns to the ring on September 12. The clash at the MGM Grand Garden Arena sees Mayweather go into the bout unbeaten as he edges closer to the milestone of going 50 fights without defeat. Mayweather's last faced Manny Pacquiao in May, in a clash that was billed as the 'fight of the century' and saw him walk away with his 48th victory following a points decision. Total fights: 48 Wins 48: (26 by KO) Losses: 0 Mayweather is the WBC, WBA, and Ring welterweight champion.Floyd Mayweather announced Andre Berto as his 49th opponentChampion remains unbeaten as he heads into clashFight will take place on September 12 at MGM Grand Garden ArenaAnnouncement means Amir Khan once again snubbed by Mayweather
_, who took home £141m ($220m) after the Pacquiao bout, apparently removed Khan from his consideration because the Bolton-born man persistently criticised Mayweather after being asked to stay silent.

Tehran (CNN) -- Iranian TV aired images Thursday of what it says is a U.S. stealth drone that went down in Iran last week, an apparently intact RQ-170 drone propped on a pedestal and triumphantly displayed. "Military experts are well aware how precious the technological information of this drone is," said Brig. Gen. Amir Ali Hajizadeh, commander of the Islamic Revolutionary Guards Corps Aerospace Forces, according to the semi-official Fars News Agency. There was disagreement among Pentagon officials about whether the drone in the video is real. Military and intelligence officials were analyzing the Iran television footage. One U.S. official said right now the U.S. can't be certain it's the real stealth drone, because U.S. personnel don't have access to it. But he added there's no reason to think it's a fake.U.S. official: "We now have no reason to believe" the drone in the video is a fakeAnother official questions the intact appearance of the drone after a crashAn Iranian general says the drone was downed "with minimum damage"Iran's Foreign Ministry delivers a reprimand of U.S. to Swiss envoy
A _ satellite quickly pinpointed the downed drone, which apparently sustained significant damage, the senior official said.

Jack Dorsey would have to give up his post at Square if he wants to become permanent CEO of Twitter. The company he helped found and now leads on an interim basis said Monday that it is only considering candidates who can make a 'full-time commitment to Twitter.' Dorsey was named interim CEO after Dick Costolo stepped down effective July 1 amid criticism over Twitter's disappointing financial performance and share price decline. Costolo had been Twitter's CEO for five years and led the company through a successful stock market debut in 2013. But Twitter has yet to make a profit and there are concerns about its ability to grow its user base.Costolo stepping down from his role beginning July 1Costolo faced controversies over online abuse and user numbersBoard only considering candidates who can make 'full-time commitment'

While some analysts expect _ to be hired to the permanent post, this would mean giving up his job at Square, the payments startup, and Dorsey has not indicated that he would do this.