1. 4 tonnes
2. Behind him / backwards
3. The US gallon is only four-fifths the volume of the English gallon
4. a. Paul b. Striped c. Paul d. Plain
5. 17 and 7 years old
6. a. yes b. no c. yes d. yes
7. 7
8. less
9. a. 20 cubes b. 56 cubes
10. – 40 degrees C is the same temperature as – 40 degrees F