Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
Question 5: Eco-tours are promoted _________ the negative effects of mass tourism.
A. to be reduced
B. to reduce
C. to reducing
D. reducing
Question 6: Their efforts to raise money for heritage _________ have been successful.
A. preserve
B. preserved
C. preservative
D. preservation
Question 7: The best time _________ the Flag Tower of Ha Noi is during the evening when it lights up.
A. visiting
B. visited
C. to visit
D. to be visited
Question 8: The government hope that harsh _________ can help to prevent heritage crimes.
A. state
B. punishments
C. crowdfunding
D. effort
Question 9: Unfortunately, recent storms did some damage to the heritage site, _________ will require repairs.
A. which
B. where
C. that
D. when