1a. This time tomorrow morning Captain Neil Armstrong and his crew ______ earth., will have left, leave, will be leaving, are leaving, 1b. This time tomorrow morning Captain Neil Armstrong and his crew will be leaving earth and ______ for the planet Mars., head, will have headed, are heading, will be heading, 2. On the first day of their voyage, they ______ the earth every 20 seconds., orbit, will be orbiting, are orbiting, will have orbited, 3a. Crew members Yuri Gagarin and Sally Ride ______ all the instruments all day long., will be checking, are checking, check, will have checked, 3b. They ______ it easy., are not taking, do not take, will not be taking, will not have taken, 4a. By the end of the year 2044 they ______ on the planet Mars., arrive, are arriving, will be arriving, will have arrived, 4b. By the end of the year 2044 they ______ 100 million light years., are going, will have gone, go, will be going, 4c. By the end of the year 2044 they ______ even one year., won’t have aged, aren’t aging, don’t age, won’t be aging, 5. What ______ as they zip through space?, do they do, are they doing, will they have done, will they be doing, 6. By the end of the first week, they ______ many interesting things about space and alien beings., will be discovering, discover, will have discovered, are discovering, 7a. By the end of the first month aboard the spaceship, the crew ______ living without gravity., will have got used to, get used to, will be getting used to, are used to, 7b. On a normal day they ______ around the cabin., are floating, will be floating, float, will have floated, 8a. Within the next 50 years, they ______ whether life on Mars exists or not., find out, are finding out, will have found out, will be finding out, 8b. Within the next 50 years, they ______ those little green men, Martians., meet, will have met, are meeting, will be meeting, 9. In the meantime, let us wish good luck to Captain Armstrong and his crew. They ______ the outer reaches of the universe., will have explored, explore, are exploring, will be exploring, 10. By 2044 ______ our knowledge of new frontiers and deep space?, will they have expanded, do they expand, will they be expanding, are they expanding, 11. From now on they ______ off into the unknown., will be flying, are flying, fly, will have flown, 12b. By 2044 will we be travelling to and ______ on other planets?, to live, live, lived, living

Future Continuous or Future Perfect

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