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an; an the; an an; the the; the
they agreed they did agree agreed they did they agree
Unless While Now that Even if
a worse one a nicer one such a worse one such a nicer one
What for Who knows Why not How come
as much as many so much so many
/ ；a a ；the / ；the the ；a
might not have heard should not have heard mustn’t hear shouldn’t hear
Of course Come on No way Not at all
May ; can Can ; can Will ; will Should ; may
at ; on with ; at for ; in by ; for
pardon me go ahead good idea forget it
heavy smooth flexible fragile
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