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 Mr. Cobb will quit the company he worked for more than six years and ------- his own business. (A) be (B) open (C) pay (D) complete No. 3 Mr. Davidson is responsible ------- hiring new employees at a restaurant. (A) in (B) at (C) for (D) from No. 4 ------- all the possible reasons for going home early, he chose the least like one. (A) In (B) Of (C) Under (D) Out No. 5 Ms. Fedelar called her assistant before she got on the plane to confirm the ------- status of the project. (A) current (B) favorite (C) potential (D) busy No. 6 Ms. Watson's plan always leaves no ------- for change. (A) emptiness (B) environment (C) room (D) objection No. 7 The designer was ------- to create a better website for that language school. (A) hire (B) hired (C) hires (D) hiring No. 8 The pilot announced that there ------- some mild turbulence during the flight. (A) are having (B) would have (C) are (D) would be No. 9 Dr. Green, who gave a speech today, is a ------- regarded professor of psychology in the United States. (A) luckily (B) gracefully (C) largely (D) highly No. 10 Everyone in the office gave Timothy a ----- to prepare for Jennifer's farewell party. (A) clap (B) ring (C) hand (D) foot