Question 42: Many fishing villages in the central of Vietnam are in ___________sensitive areas.

(environment)

Question 43: Working together and sharing housework help ____________our family bond. (strong)

Question 44: R &B is one of my _________ kinds of music which bring me a lot of fun in my free time. (favor)

Question 45: Sometimes, they feel ___________when they fail to persuade people to use fewer plastic bags. (encourage)