the book is very （help）,do you think so?

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thebookisvery（help）,doyouthinkso?thebookisvery（help）,doyouthinkso?thebookisvery（help）,doyouthinkso?h

the book is very （help）,do you think so?
the book is very （help）,do you think so?

the book is very （help）,do you think so?
helpful

helpful

yes ，i think so