Study

GS11 U6 L5

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  • This building still keeps its ______ design from the 19th century.
    original
  • Many famous caves in Viet Nam are made of ______ rock.
    limestone
  • Humans and nature must ______ with each other to create a balanced environment.
    interact
  • Cutting down too many trees can seriously damage the local ______.
    ecosystem
  • The village is located in a wide ______ surrounded by high mountains.
    valley
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