143.
(A) has been circulating
(B)has been circulated
(C)have been circulating
(D)have been circulated

139. (A) in advance of (B)for the purpose of (C)in response to (D)with regard to

140. (A) rarely (B)repeatedly (C)unusually (D)unlikely

141. (A) As a single mother, I could hardly afford the rent and electricity bill due to doing a lot of unpaid overtime. (B)As the new mayor of this city, you should take immediate action to ensure that my employer complies with labor laws and regulations. (C)As a health-conscious person, I urge you to help me buy dietary supplements at lower prices. (D)As a newly elected mayor, you have to familiarize yourself with every illegal activity in this city and tell my employer that he has done something illegal.

142. (A) protecting (B)protect (C)have protected (D)have been protecting

144. (A) financial incentive (B)compensation scheme (C)expansion plan (D)zero-tolerance policy

145. (A) take (B)taking (C)make (D)making

146. (A) We have a confidential reporting system in place, and all reports are taken seriously. (B)We are going to hold an anniversary two months from now. (C)We aim to report the news as fairly as possible. (D)We are excited to announce the person responsible for spreading the rumor was just found.

147. How does the rival company keep their younger employees motivated and loyal? (A) By paying them more than experienced workers. (B)By offering a lot of training and career development opportunities. (C)By hiring their senior marketing manager's ex-girlfriend. (D)By investing in new technology.

148. What is Wilson's opinion on hiring more college graduates? (A) He thinks it will be too expensive. (B)He is unsure about the benefits. (C)He thinks it will lead to decreased profits. (D)He thinks it could lead to increased profits.

149. Which of the following best describes the passage? (A) A guide to planning a successful computer expo. (B)An overview of the history of computer technology. (C)An analysis of the impact of big data on small businesses. (D)A review of the latest computer hardware and software products.