请帮我做几道英语选择题,并做简要分析.
1.To the doctor,the most importamt thing is ( )people's lives.
A.save B.saved C.saving D.to save
2.He has decided ( )us the truth.
A.tell B.to tell C.telling D.told
3.Did you see someone ( )the window.
A.break B.broke C.broken D.to break
4.I hurried to his house only ( )he was out.
A.find B.to find C.finding D.found