Ответ:

Решение:

Используем Present Continuous для описания действий, происходящих в данный момент.

  1. Is Jake singing (sing)? No, he isn't.
  2. What are Robert and Peter doing? They are playing on the computer?
  3. What is the dog doing? It is biting the armchair?
  4. What is Sandy doing? She is playing the piano?
  5. What are Jake and Tom doing? They are jumping on the sofa?

Ответ: 1. No, he isn't. 2. are...doing...are playing. 3. is...doing...is biting. 4. is...doing...is playing. 5. are...doing...are jumping.