Ifyouhaveanyproblemsduringyourstudyhere,pleasedonot_______tocallmeforhelp
Whentravelingaloneinthemountains,you’dbettertakea_______withyouincaseyougetlost.
Sometimesitisverydifficultto_______someoftheEnglishwords.Eventhenativespeakercannothelp.
ThecollegestudentsinChinaare_______fromsmokingoncampusbecausethiswilldothemnogood.
Afterworkingfortwentyhourswithoutanyrest,thedoctorswere_______.