问题 4选择型By next month, he ____ in this company for 10 years.will workwill be workingwill have workedworks
问题 6选择型By the time you wake up, I ____ to the airport.will have gonewill have wentam goingwill have going
问题 7选择型By the end of this week, she ____ all her exams.will have completedcompletesis completingcomplete
问题 9选择型By the time they arrive, we ____ for three hours.waitwill have waithave waitedwill have waited
问题 11选择型By the end of this year, she ____ five books.will have publisheswill have publishingwill have publishedwill have publish
问题 12选择型By tomorrow morning, they ____ their project.will have completedwill had completwill have completingwill have completes
问题 13选择型By next weekend, we ____ all the preparations for the wedding.will have finishingwill have finisheswill have finishedwill have finish
问题 14选择型By 2050, technology ____ even more advanced.will have becomewill have becamewill had becamewill have becom
问题 15选择型By the time she turns 30, she ____ in five different countries.liveis livingliveswill have lived
问题 16选择型By next Monday, the manager ____ a decision.will have madewill have makewill have madedwill have maked
问题 17选择型By the time you read this letter, I ____ to another city.will have movingwill have movedwill have movewill have moves
问题 18选择型By the time we get to the station, the train ____ .will have leavewill have leaveswill have leftwill have lefted
问题 20选择型By the end of this decade, humans ____ on Mars.will have landedwill have landingwill have landeswill have land