Tom usually sleeps for eight huors every night(对划线部分提问) ———————

问题描述:

Tom usually sleeps for eight huors every night(对划线部分提问) ———————
—— —— —— Tom usually sleep every night?
for eight huors是划线部分 how many hours 开头不行 开头只有3个空格

How long does
绝对没错```
how long 是对持续时间的提问