Вопрос по английскому языку:

Помогите проверить правильность составления моих вопросов с вопросительными словами в скобках к предложениям. За помощь заранее благодарю!
1. My cat's name is Sunny. (Why?) (ответ)
Why is his name Sunny? (мой вопрос)

2. He likes to play. (Yes/No) (ответ)
Does he like to play? (мой вопрос)

3. His favourite place for sleeping is an armchair. (What?) (ответ)
What is his favourite place for sleeping? (мой вопрос)

4. His eyes are green. (What colour?)
What colour are his eyes?

5. He is only two years old. (How old?)
How old is he?