When traveling alone in the mountains, you ’d better take a _______ with you in case you get lost.
A
暂无解析
IntheUnitedStates,theforeignpolicyisdecidedbythe________government,notbyeachstate.
Whenmakingmoderncameras,peoplebeganto_______plasticsformetal.
Itisnot---_______formetoreturnallthebookstothelibrarynowbecauseIstillneedsomeofthemformyresearch.
Studentswith_______problemsmayapplyforstudentloans.