Theprofessorsaidhecouldtalkon_____interestedtheaudience.
A、anytopicPostage ______, the necklace will cost you at least 650 yuan.
Ms Nancy didn't mind at all ______ to the ceremony.
Undernocircumstance_____totellliestoparents.
Under no circumstance _____ to tell lies to parents.
Modernscienceandtechnologyhas_____communicationbetweenpeoplefarapart.
