She had notrealizedtheextentto which thechildrenhad beenaffected.
Theextentto whichsafetymeasuresarefollowedvariesfromplacetoplace.
It isdifficulttomeasuretheextentto which doinghomeworkleadstobetterexamresults.
Thecountriesareratedon theextentto which theyexhibitadefinedset ofdemocraticcharacteristics.
It isdifficulttooverstatetheextentto which thisgovernmentisinfluencedby thetheocraticagenda.