Whentravelingaloneinthemountains,you’dbettertakea_______withyouincaseyougetlost.
Withthe_______ofMary,allthegirlstudentsareeagertogototheparty.
Thedoctors_______themedicinestothepeopleinthefloodarea.
Itisnot---_______formetoreturnallthebookstothelibrarynowbecauseIstillneedsomeofthemformyresearch.
Thisriverissobigthatitisimpossibletobuilda_______underitwithoutmoderntechnology.