21.
(A) work
(B) works
(C) worked
(D) working

17. Accusations ____________ high-profile media figures are sometimes kept off or buried by mainstream platforms. (A) on (B) against (C) for (D) in

18. This juxtaposition not only underscores what ideas of gastronomy these texts share but also ___________ the ways in which they are distinctive from each other. (A) illustrate (B) illustrating (C) illustrates (D) illustrated

19. The clinical method refers to _________, think about and evaluate the facts, and enter the facts into their process of care. (A) the means by which doctors gather information about the patients (B) the means that doctors gather information of the patients (C) the doctors who use the means to gather information about the patients (D) the doctors who gather the means about the information of the patients

20. Approaching a doorway in which dangles a red envelope filled with green paper money, ________. (A) the lion’s teeth snare the envelope (B) the envelope is snared by the lion with its teeth (C) the teeth of the lion snare the envelope (D) the lion snares the envelope with its teeth

22. (A) being announcing (B) been announcing (C) announced (D) had announced

23. (A) advance (B) prevent (C) approve (D) release

24. (A) involve (B) involved (C) involving (D) involves

25. (A) vulnerable (B) susceptible (C) immune (D) hindered

26. (A) been paid (B) paid (C) being paid (D) are paying

27. (A) paid back (B) flashed back (C) bounced back (D) sunk back