Кратко дай ответ is it his bike? is the bike green? is Jane six?

1. Is it his bike? (Это его велосипед?) - Yes, it is. / No, it isn't.
2. Is the bike green? (Велосипед зеленый?) - Yes, it is. / No, it isn't.
3. Is Jane six? (Джейн шесть?) - Yes, she is. / No, she isn't.
Yes, it is. - Да, так и есть.
No, it isn't. - Нет, это не так.