1.unmanned adj. - A. not having a human presence or operator., 2. launch v. - B. to begin something such as a plan, 3.orbit v. - C. the curved path through which objects in space move around a planet or star, 4.light up v. - D.If your face or eyes light up,or if a smile lights up your face, you suddenly look happy, 5. pioneer v - E. to be a leader or innovator, 6.supply v - F. to provide something that is wanted or needed, 7. unreadable adj. - G. badly written to be worth reading, 8. come across ph.v - H. to find something by chance, 9. work out ph.v - I. to understand something, 10. discover v - J. to find information, a place, or an object, especially for the first time, 11.revolutionise v  - K. to completely change something so that it is much better,

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