He_______tostudyharderinthefuturesothathecouldhavemoreopportunitiestofindabetterjob.
Whentravelingaloneinthemountains,you’dbettertakea_______withyouincaseyougetlost.
Ifyouhaveanyproblemsduringyourstudyhere,pleasedonot_______tocallmeforhelp
ThecollegestudentsinChinaare_______fromsmokingoncampusbecausethiswilldothemnogood.