Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Residents have called for a _______ campaign to keep their streets free from rubbish.
 
A.wash-up
B.cleaning
C.clean-up
D.protection

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
WWF helps the community ______ a bird watching tower and provides binoculars and bird watching books.
A.to build
B."build" & "to build"are corrrect
C.build
D.building

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
For them, the house's main _______ lay in its quiet country location.
A.interest
B.conserve
C.cost
D.value

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The bay _______ by the enemy many years ago before it was made to be a destination for ecotourism.
 
A.was used for being attacked
B.used to be attacked
C.used to attack
D.was used to be attacked

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The fire _______ very rapidly because of the strong wind.
A.went up
B.spread
C.boomed
D.expanded

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The park staff offer eco- trails ________ the biodiversity of the areas.
A.to show
B.to showing
C.showing
D.show

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Its abundant natural resources and rich biodiversity offer _______ for ecotourism development.
A.ability
B.capability
C.potential
D.benefit

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Ecotourism also offer opportunities for ________ and sustainable development to local communities.
A.employees
B.employs
C.employers
D.employment

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Cambodia has unique ecosystems and _______ landscapes with 23 national protected areas.
A.impressive
B.impress
C.impression
D.impressed

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Visitors come and see the End Point Tower, which _________ the southernmost tip of Viet Nam.
A.mark
B.marks
C.to mark
D.marking