No. 1 The flight was redirected to Portland ------- a storm that shut down San Francisco's airport. (A) since (B) for (C) due to (D) because No. 2 David has been a member of a special research group in our laboratory ------- over fifteen years. (A) since (B) for (C) in (D) from No. 3 Bob raised his hand to ask a question ------- during the presentation. (A) quickly (B) early (C) quick (D) short No. 4 The CEO was awarded a prize for his ------- to the local community. (A) contributed (B) contribute (C) contributions (D) contributes No. 5 This intensive workshop will teach you how to overcome performance anxiety and develop more ------- skills. (A) presently (B) presenter (C) presentation (D) presented No. 6 The professor at the business school often tells his son that there is no such thing as a 100% ------- profitable business. (A) guarantee (B) guaranteeing (C) guaranteed (D) to guarantee No. 7 If you can't access the online shop, please fax in your order ------- business hours only. (A) midst (B) across (C) except (D) during No. 8 Gregory will have to work on weekends in order ------- the deadline. (A) to make (B) make (C) made (D) making No. 9 Jeff was surprised to ------- that one of his colleagues had been fired while he was on leave. (A) find (B) think (C) told (D) saw No. 10 Tonight's dance performance is ------- to raise awareness about our city's cultural program. (A) intend (B) intended (C) intention (D) intentional