Therearesomepolicecarsinfront.Whatdoyousuppose_____?
A、isthematterTina_____haveknownthetruth,orshewouldhavetoldus.
ManyworkerswereorganizedtoclearawayremainedoftheWorldTradeCenter.
Withhiseyes______onthefamilyalbum,hethoughtofthefunhehadwhenhelivedwithhisparents.
_____theteacher'ssuggestion,Tomfinallyfoundawaytosettletheproblem.
IheardthatyoureallyhadawonderfultimeatJohn'sbirthdayparty,_____?