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

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
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

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
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

Căn cứ vào các chất dinh dưỡng, môi trường nuôi cấy vi sinh vật được chia ra thành:
A.Môi trường tự nhiên, môi trường bán tổng hợp và môi trường tổng hợp
B.Môi trường tổng hợp và môi trường bán tổng hợp
C.Môi trường tự nhiên và môi trường nhân tạo
D.Môi trường tự nhiên, môi trường nhân tạo và môi trường tổng hợp