she decided to devote hrself(to studying)the problem of old age为什么要加to?

She decided to give herself ___ the police . She has decided to ___her English,so she asked me to___a couple of dictionaries for her. _____her hair getting gray,she has decided to have it dyed . ____being in hospital ,Shelly decided that she wanted to become a nuse. June cann't find her scissors. SO she's decided to buy[ ]. 1. _____her hair getting gray , she decided to have it dyed. they decided to go to movies _______a reply,he decided to write again. That is ___I decided to change we decided to choose questionnaire to be our research method.