my friends are all here but yours ( )come yet._( )seems to h
my friends are all here but yours ( )come yet._( )seems to have been no need for us to wait for
them.
a:haven't ;it b：hasn't;they c：hasn't;we d:haven't;there
them.
a:haven't ;it b：hasn't;they c：hasn't;we d:haven't;there
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