139.
(A)explain
(B)to explain
(C)be explained
(D)be explaining

135. (A)why (B)that (C)for (D)from

136. (A)This trend has raised some concerns about the impact it could have on the job market and the overall attitudes towards work. (B)Overall, the "Quittok" trend serves as a reminder that the way we view work is changing, and that employers and employees alike need to adapt to these changes in order to thrive in the new economy. (C)Whether it leads to a more positive or negative outcome remains to be seen, but one thing is certain: the power of social media to shape our lives and our culture is stronger than ever. (D)The article explores the potential consequences of the trend for both employers and employees, and raises questions about the future of work and the role of social media in shaping it.

137. (A)highlights (B)detaches (C)removes (D)demoralizes

138. (A)whether (B)that (C)which (D)it

140. (A)or (B)that (C)whatever (D)which

141. (A)Despite (B)Although (C)Regardless (D)Once

142. (A)overstate (B)undermine (C)outweigh (D)undertake

143. (A)with (B)of (C)at (D)for

144. (A)terminations (B)exploitations (C)donations (D)contributions

145. (A)Throughout (B)Beforehand (C)Nevertheless (D)Following