The engineers in this lab spent several weeks _______their plans for the new bicycle.
C
暂无解析
Studentswith_______problemsmayapplyforstudentloans.
Inordertoincreaseouroutput,weneedtoimportmoreproduction_______.
The_______workcontinuedformorethanaweekbuttherewasstillnosignofthemissingboy.
Sheisalready16yearsold.Butshe_______asifshewerestillalittlegirl.
Asateacher,youshouldnot_______thestudentsfromaskingquestionsinclass.