Itisnot---_______formetoreturnallthebookstothelibrarynowbecauseIstillneedsomeofthemformyresearch.
A、continuousWeare_______attherapidprogressMarkhasmadeinthissemester.
Whenaspacecrafttravels,oneofthemajorproblemsisreentryintotheEarth’s_______.
IntheUnitedStates,theforeignpolicyisdecidedbythe________government,notbyeachstate.
Bothsugarandsaltcan______inwater.
Wecannottrusthimanymorebecauseheoften________hisduty.
