Listen to a radio programme and choose the best ending for each statement.

1. The presenter allows one minute ...

2. The most significant breakthrough in engineering is ...

3. According to Marion, ancient people ...

4. Marion gives the example of the watch to illustrate ...

5. Trevor chooses electricity as the greatest breakthrough because ...

6. Lucy’s answer is different from the others because ...

7. According to Lucy, new types of fuel will be developed with the help of ...