Franklin Roberts was an commercial airline pilot with more than 21,000 hours of flying time behind him. However, (1)...........of his great experience, he could not explain something which happened (2).............. him in summer of 1981. As he was flying over Lake Michigan, an object (3).................in the sky which took him completely be suprise. (4).................it was, it raced through the sky ahead of his plane and then turned across his path, before finally disappearing into the distance (5)............. is the kind of incident that fascinates Richard Haines, a psychologist who work at a research institute (6)...........Cafornia, and investigates reports like these as a hobby. Over the last twelve years, he (7)............. collected thousands of reports on UFOs seen by plane crews. He has concentrated on the stories told to him by pilots (8).................. he belives they are more likely to be accurate. Pilots are trained in observation and make reliable witnesses. They would generally know what they were looking at (9) ................ it were something familiar. Critics of Haines's work say that there is, in fact, nothing special about pilots. They claim that pilots are as capable of making mistakes as (10)..............else. However, none of this has stopped Haines, who continues to investigate UFO reports with ethusiasm. 1A.though B.although C.in spite D. despite 2A.with B.to C.for D. on .3.was appeared B.appears C..was appearing D. appeared 4A.Whatever B.What C.However D. How 5. A.It B.Those C .These D.This 6.Aat B.in C. on D.from .7.twas B.X C.has D. had .8.because B.because of C.but D. .though .9.whether B.or C.unless D. if 10.everyone B.anyone C.somebody D.ones Làm ơn giúp mk Cho 5* + cảm ơn + ctlhn ( nếu đúng)