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 The business trip was cancelled because the government ------- travel warnings yesterday for that country. (A) issues (B) issue (C) issued (D) has issued No. 3 Ms. Rolling wrote a courteous letter to the hotel manager ------- the visit, requesting a special arrangement to commemorate their 50th wedding anniversary. (A) on time (B) in advance (C) prior to (D) close to No. 4 A labor union was established in ------- of common interest by working students. (A) postage (B) pain (C) pursuit (D) partner No. 5 Professor Hanna Park was by ------- until the arrival of Dr. Eric Snow at 9:30 a.m. (A) she (B) her (C) herself (D) hers No. 6 If you have a question about course registration, please feel ------- to contact the administration office. (A) happy (B) good (C) fine (D) free No. 7 Josh will ------- lunch at his desk today because he has to wait for an important call. (A) having (B) have been having (C) be having (D) have had No. 8 The trend for retail stores these days is to ------- an online presence. (A) being (B) be (C) have (D) has No. 9 The rumor about the company has spread rapidly ------- thousands of employees. (A) among (B) along (C) aside (D) astride No. 10 It was quite shocking that Ms. Wimbledon left our company ------- saying anything last week. (A) on (B) from (C) by (D) without