Краткое пояснение: В косвенной речи порядок слов меняется, и вопрос «When is your birthday?» преобразуется в утвердительное предложение.
- She wanted to know if it was my birthday.
- She wanted to know when my birthday would be.
- She wanted to know when my birthday was.
- She wanted to know what it was.
Правильный ответ: She wanted to know when my birthday was.
Ответ: She wanted to know when my birthday was.