When traveling alone in the mountains, you ’d better take a _______ with you in case you get lost.
A
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Thismorningintheclass,ourteacherlosthis______atlastbecausehecouldnotstandanymore.
Whenmakingmoderncameras,peoplebeganto_______plasticsformetal.
He_______tostudyharderinthefuturesothathecouldhavemoreopportunitiestofindabetterjob.
Studentswith_______problemsmayapplyforstudentloans.
IntheUnitedStates,theforeignpolicyisdecidedbythe________government,notbyeachstate.