Duringthetouristseason,therearemanypeoplewanderinginthiscitytoseetheoldcastles_____inthesixteenthcentury.
A、tobebuilt_____theteacher'ssuggestion,Tomfinallyfoundawaytosettletheproblem.
MytrainarriveinNewYorkateighto'clocktonight.TheplaneIwouldliketotakefromthere______bythen.
Therearesomepolicecarsinfront.Whatdoyousuppose_____?
Onhearingagreatnoise,Mikelookedforwardthroughthewindow_____whathappenedoutsidetheroom.
Itisnolongeraproblem_______thepoorchildreninthisdistrictcangotoschool.
