22.
(A) three
(B) thirds
(C) third
(D) threes

18. The Liberty Bell is an object of great reverence because it _____ in 1776 to proclaim the signing of the Declaration of Independence. (A) was rung (B) were rung (C) has rung (D) rung

19. The capacity for flight _____ insects from the other invertebrates. (A) distinguish (B) to distinguish (C) distinguishing (D) distinguishes

20. Which of the following is grammatically accurate? (A) Malvin Gray Johnson is noted especially for the pictures who he painted in Brightwood, Virginia, in the late summer of 1934. (B) Successful economists must be able understand the effect of world events on national economies. (C) The distinction between complex and simple lipids lie in their cell structure. (D) The fundamental problem of a tax system is to collect enough money to pay for the expenses of government.

21. (A) off (B) at (C) on (D) upon

23. (A) investing (B) entrepreneur (C) illuminating (D) entry

24. (A) spell (B) skill (C) drill (D) distill

25. (A) exploits (B) recruits (C) prompts (D) projects

26. (A) was texting (B) is texting (C) has texted (D) texts

27. (A) turn (B) time (C) exchange (D) hindsight

28. (A) less (B) more (C) as (D) than