She must play the piano for at least one hour.(对for at least

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She must play the piano for at least one hour.(对for at least one hour 提问)

为你解答.
She must play the piano for at least one hour.(对for at least one hour 提问)
How long must she play the piano?
她必须要弹多久钢琴?
解释：how long用于对时间长度提问.

She must play the piano for at least one hour.(对for at least plan at least on hour for each hour in class at least for the time being 翻译 You must pay for your course at least one month before it st you must enter at least one of the followong:wmail password must contain at least one lowercase passwords must contain at least one uppercase passwords must montain at least one uppercase Password must contain at least one letter 英语翻译Check the box for each word you know at least one defini at least与at the least She is at least five years old 和She must be at least five ye