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You will hear an interview with a professor called Martin Hart and a housebuilder called Anna Peterson who are talking about houses made out of blocks of straw. For each question, choose the correct answer.
 

1   What does Martin Hart say about using straw in the construction of houses?
2   When developing the technology for building straw houses, Martin added bricks to the outside because
3   What objection did Martin receive about the straw houses his team built?
4   Anna Peterson decided to build a straw house for the first time because
5   When describing her current role in straw house projects, Anna explains that
6   The most important consideration for Anna in all her projects now is to
7   When talking about the future, Anna expresses her desire to