28. I don’t think you’ve quite___the seriousness of the situation. You seem to know nothing about it.
E-mail,aswellastelephones,______animportantpartindailycommunication.
—Bob,you______onthephone. —______.
Nothavingfinishedhishomework,______towatchTV.
—DoyouknowanyoneinParis? —No.I'llmakefriendsonce______.
Don'tgetthatinkonyourshirt,forit______.