Part 4: Underground Houses Section 4 – Questions 31–40 Question 31-36 Write NO MORE THAN TWO WORDS for each answer.   Earth-sheltered Housing Advantages: has a 31 ___________ on the environment increased use of energy-efficient 32 ___________ technologies can have a very long 33 ___________ easy to maintain no noise from the 34 __________ outside … Continue reading Part 4: Underground Houses