John_______tobeapoliteman.Butinfactheisveryrude.
A、pretendsThisboywas_______forwhathehaddoneintheclass.
ProfessorSmithisalsothe_______oftheinternationalprogramoffice.Ifyouhaveanyproblemwhenyoustudyhere,youmaygotohimforhelp.
Sheisalready16yearsold.Butshe_______asifshewerestillalittlegirl.
Weare_______attherapidprogressMarkhasmadeinthissemester.
Whenmakingmoderncameras,peoplebeganto_______plasticsformetal.
