20. Although the world has had a lot of suffering, we shall not give up _______ the challenge.
(A) across
(B) of
(C) to
(D) from

16. The Central Epidemic Command Center (CECC) made an announcement to extend _______ measures for the rise of Omicron cases.(A) social distance (B) social distant (C) social distances (D) social distancing

17. I didn’t know I was _______ but when I arrived, my colleagues had already left without me.(A) latter than one hour (B) latter for one hour (C) late one hour (D) one hour late

18. Our Digital COVID-19 Certificate is recognized by the European Commission as _______ to the EU’s version that can prove whether a person has been vaccinated.(A) equally (B) equality (C) equivalent (D) equivalency

19. The federal government asked that vaccinating all students _______ done soon； however, there are still many unvaccinated students as of today.(A) had been (B) be (C) have been (D) were

21. The president delivered her New Year’s address and wished the pandemic _______ to an end shortly.(A) had come (B) could come (C) comes (D) were coming

22. “The King is dead, long _______ The King!” is a traditional proclamation made following the accession of a new monarch in various countries, such as the U.K.(A) life (B) live (C) lives (D) living

23. _______ I understood what the report was saying, I found it hard to believe there were plenty of people who genuinely believed the Earth is flat.(A) Much as (B) More than (C) Much for (D) More to

24. It is highly _______ that people become aware of the serious consequences that fake news could bring.(A) desirable (B) desiring (C) desire (D) to desire

25. Even up to now, one year later, I still think we could have prevented such a tragedy from happening _______.(A) in first place (B) at first place (C) in the first place (D) at the first place

26. What did Richard Feynman imply by saying, "...it's a wonderful problem because it doesn't look easy"?(A) Feynman thought building a quantum computer was an excitedly worthwhile challenge.(B) Feynman implied that he knew exactly how to build a quantum computer with ease.(C) Feynman revealed his reluctance to build a quantum computer that could be too complicated.(D) Feynman believed making a simulation of nature was the main purpose of quantum computers.