Doyourememberthebuilding____flewaredflagalltheyearround?
over which
暂无解析
Heborrowedabooktheotherday，theauthor____isaworker.
Mostofthepeopleinthegroupfeltratherdisappointedattheirtravellingabroad.Theysaythatit_______betterorganized.
Thetimehascome_____wemakeextensiveuseofnuclearenergy.
Asisknowntousall,theage_____childrencangotoschoolisseven.
Ioftenthoughtofmychildhood,____Ilivedonafarm.