The key answer of exercise 10

a)

1. Are Indian elephants heavier than African elephants?
2. Is Tokyo more expensive than Singapore?
3. Are giraffes faster than humans?
4. Is Canada smaller than the USA?
5. Is the North Pole colder than the South Pole?

b) -

c)

1. A: Are Indian elephants heavier than African elephants? B: No, they aren’t. African elephants are heavier than Indian elephants.
2. A: Is Tokyo more expensive than Singapore? B: Yes, it is. Both places are quite expensive, but Tokyo is more expensive than Singapore.
3. A: Are giraffes faster than humans? B: Yes, they are. Giraffes can run at 35 miles an hour which is faster than any human being.
4. A: Is Canada bigger or smaller than the USA? B: Canada is slightly bigger than the USA.
5. A: Is the North Pole colder than the South Pole? B: No, it’s warmer. The South Pole is colder than the North Pole.