15. The workers of this company are performing well because they are passionate about __________ excellent quality products.
(A) provided
(B) to provide
(C) providing
(D) provides

11. Mr. Smith is writing to the hotel manager to complain about the poor service he received __________ his stay at the hotel.(A) during(B) with(C) among(D) when

12. Ellen speaks __________ English and Japanese in the office.(A) either(B) no only(C) both(D) as well

13. Tokyo is a popular city which __________ thousands of tourists every year.(A) attracted(B) attracts(C) has attracted(D) will attract

14. Nothing __________ about the man. No one could have guessed that he had so much money in the bank.(A) people didn't know(B) knew people(C) people knew(D) people know

16. If you saw an interesting job vacancy, what __________? (A) will you do (B) would you do (C) do you do (D) did you do

17. Daniel __________ walk to school when he was in senior high school, but now he is a university student and has to ride a motorcycle. (A) used to (B) is used to (C) is using to (D) was using to

18. Jonathan avoids __________ exercise whenever possible because he is a couch potato.(A) doing(B) to do(C) being done(D) do

19. My brother, __________ a master's degree in France, speaks excellent French.(A) gets(B) has got(C) who gets(D) who got

20. If I had known the college entrance exam was so difficult, I __________ harder.(A) study(B) had studied(C) would have studied(D) would have been studying

21. Which sentence best summarizes the main idea of the news story?(A)America has the highest Coronavirus infection rate, but has so far prevented mutations of the virus.(B)Many countries are discovering more deadly variants of the coronavirus.(C)It is important to close borders to reduce the spread of a new variant of the coronavirus.(D)A new variant of the Coronavirus is more contagious and may already be in America.