Ответ:

Решение:

Заполним пропуски, преобразуя слова в скобках так, чтобы они соответствовали контексту:

  1. Animals. They ate food that humans threw away. (THROW)
  2. Dogs become humans' friends by accident. (NOT BECOME)
  3. One of the reasons is that dogs are cleverer than other animals. (CLEVER)
  4. They can learn quickly. (LEARN)
  5. ... When your dog does do a command, offer a small treat or say “Good dog!” (DO)

Ответ: 1. threw, 2. become, 3. cleverer, 4. learn, 5. do