请帮我做几道英语选择题,并做简要分析.
1.Tothedoctor,themostimportamtthingis()people'slives.
A.saveB.savedC.savingD.tosave
2.Hehasdecided()usthetruth.
A.tellB.totellC.tellingD.told
3.Didyouseesomeone()thewindow.
A.breakB.brokeC.brokenD.tobreak
4.Ihurriedtohishouseonly()hewasout.
A.findB.tofindC.findingD.found