两个或两个以上的当事人按共同商定的条件，在约定的时间内定期交换现金流的金融交易是( )。
_______isafactthatEnglishisbeingacceptedasaninternationallanguage.
You’llbetheretomorrow--youwon’t________me________,willyou?
Don’ttrusteverything________youhavereadinthenewspapers.
Let’snottakeJohnwithusonourfamilyoutingthistime,_______________?
_______forthefreeticket,Iwouldnothavegonetoseefilmsooften.