John had to go to bed by ten yesterday evening(对划线部分提问)【划线部分为by ten】急

问题描述:

John had to go to bed by ten yesterday evening(对划线部分提问)【划线部分为by ten】

When did John have to go to bed yesterday evening

What time did John have to go to bed yesterday evening?

When did John have to go to bed yesterday evening?