Whentravelingaloneinthemountains,you’dbettertakea_______withyouincaseyougetlost.
A、compassWecannottrusthimanymorebecauseheoften________hisduty.
Whenaspacecrafttravels,oneofthemajorproblemsisreentryintotheEarth’s_______.
Whathesaidinthemeeting_______everybodypresent.
Inordertoincreaseouroutput,weneedtoimportmoreproduction_______.
John_______tobeapoliteman.Butinfactheisveryrude.
