Thisriverissobigthatitisimpossibletobuilda_______underitwithoutmoderntechnology.
A、canalHealwayshasalotof_______ideasinhismind,andsometimeswedonotevenknowwhatheisthindingabout.
Weare_______attherapidprogressMarkhasmadeinthissemester.
Thismorningintheclass,ourteacherlosthis______atlastbecausehecouldnotstandanymore.
Thedoctors_______themedicinestothepeopleinthefloodarea.
Itisnot---_______formetoreturnallthebookstothelibrarynowbecauseIstillneedsomeofthemformyresearch.
