They are _________ their grandmother’s 70th birthday . A. greeting B .celebrating C .joining D congratulating
Jackson______toworkingovernmentofficethoughhehatedservingthere.
E-mail,aswellastelephones,______animportantpartindailycommunication.
—Bob,you______onthephone. —______.
Nothavingfinishedhishomework,______towatchTV.
—DoyouknowanyoneinParis? —No.I'llmakefriendsonce______.