The book you read how long? I have read 2 hours, but didn't finish!
How long have you been reading this book?
I have been reading for hours but have not finished it yet
How long do you read this book?
I have read it two hours.
What time do you read this book?
I read it two hours ago,but i still read it!
How long do you read this book?
I read it since two hours,but i read it now!
How long did you read this book ?
I have read it for 2 hours ,but didn`t finish it.
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