--willthediscussionlast?--wereachanagreement.()A.Howlong;NotuntilB.When;NotuntilC.Howlong,UntilD.When,Until
--______ will the discussion last?
--______ we reach an agreement.( )
A. How long; Not until
B. When; Not until
C. How long,Until
D. When,Until
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