________they'vegottoknoweachotheralittlebetter,theygetalongjustfine.
A、DuetoItisusefultoscience_______theearthasanobjectinspace.
Weregretto________thatitmaynotbepossibletodealwitheveryrequest.
WhenIcamethroughthecustomsattheairport,Ihadtopay________onaclockIhadbought.
Thestudentfoundthenovel_______.Itprovidedhimwithsomuchinformationaboutthesubject.
ItwasthreeBritishsportsmenwho________banneddrugs.
