No. 1 The next flight to Houston has been cancelled ------- mechanical difficulties with the aircraft. (A) concerning (B) due to (C) because (D) in so much that No. 2 News reports must confirm if the source is ------- before reporting the news. (A) changeable (B) portable (C) unable (D) reliable No. 3 George couldn't arrive there on time because he ------- the freeway exit on the way. (A) drove (B) saw (C) left (D) missed No. 4 Analysts had predicted ------- that the Japanese market would shrink this year. (A) now (B) so (C) earlier (D) ago No. 5 As many medical professionals predicted, the infection spread ------- the country by the end of summer. (A) through (B) throughout (C) on (D) out No. 6 TR Motors recently discontinued production of the sports car, which was a top-selling product of ------- in the 1990s. (A) theirs (B) them (C) their (D) they No. 7 The change of World Future Inc.'s CEO was part of the company's reorganization plan, which ------- last month by the board of directors. (A) approved (B) had approved (C) would approve (D) was approved No. 8 Finding qualified members for this project could be ------- difficult. (A) extreme (B) extremer (C) extremely (D) extremity No. 9 When the president of that giant film production company visits Japan, he will be accompanied ------- tens of bodyguards. (A) from (B) for (C) by (D) in No. 10 Ms. Park came to work though she ------- a stomach flu. (A) was (B) took (C) have (D) had