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The Book of Life So far, scientists have named about 1.8 million living species (特种), and that’s ju...

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Now that  In case  So long as  As far as  
symbols   signs   marks   signals  
read   am reading   have read   will read  
evidence      relic    mystery    reception  
was  were  have been  has been  
convince    commit    accustom    transform  
No, it isn’t   I’m afraid not   I don’t think so   Yes, it is  
was   had been   has been   will be  
so what,   what if   if so   how come  
So far as    So far    So long as    So as  
so far    all year    on earth    in the future  
was    had been    has been    will be  
as soon as    so possible as    as long as    as far as  
I'm not sure    I hope so    I'd rather not    Far from it  
so exciting    such an exciting    such exciting    so a exciting  
No, it isn’t    I’m afraid not    I don’t think so    Yes, it is  
if had it not been    is it not being    had it not been    its only having been  
I’m not sure    I hope so    I’d rather not    Far from it  

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