The engineers in this lab spent several weeks _______their plans for the new bicycle.
C
暂无解析
Wedonothavea_______schoolinourinstitute.ThehighestdegreeweprovideforthestudentsisaB.A.andaB.S..
Allthememoriesofhischildhoodhad_______fromhismindbythetimehewas65.
Many kinds of animals are believed to have _________from the earth
Withoutapropereducation,peoplecould_______allkindsofcrimes.
Weare_______attherapidprogressMarkhasmadeinthissemester.