“确认的”用英语怎么说

该研究所表示,引起这种综合症的是一种尚未确认的病毒.The Institute says that an unidentified virus is to blame for the syndrome.我会给你回电话确认的.I'll call you back to confirm.怀特先生,我会尽快给您确认的.I'll confirm your appointment as soon as possible, Mr...