Question

Я проверял свой e-mail до того времени пока сестра не проснулась, на английском языке?​

Answer 1

I checked my e-mail until my sister woke up

Answer 2

I checked my e-mail before my sister woke up

Answer 3

According to Google Translate, the sentence "Ответь подробно. Я проверял свой e-mail до того времени пока сестра не проснулась, на английском языке?" means "Answer in detail. I checked my e-mail until my sister woke up, in English?" in English. This is a question that asks for a detailed answer about something that the speaker did before their sister woke up. The speaker also specifies that they want the answer in English.