She will never forget here stay there__________ she found her son who had gone missing two years before.

依次填入下列横线处的关联词语，最恰当的一组是(　　 )当前全国安全工作形势严峻，出现了种种问题，________有多方面的原因，________根本原因在于原有体制的弊端没有消除，有些政府官员安全责任意识不强。________，要尽快扭转这种局面，________通过进一步深化安全改革，________能实现。

He loves mountain _______ and kept on _________ mountains even after losing his arm.

Not until they left school ___ howmuch their teachers loved them and helped them

I missed the last bus, so I _____ go home on foot.