The engineers in this lab spent several weeks _______their plans for the new bicycle.
A、countingC
暫無解析
Manykindsofanimalsarebelievedtohave_________fromtheearth
ProfessorSmithisalsothe_______oftheinternationalprogramoffice.Ifyouhaveanyproblemwhenyoustudyhere,youmaygotohimforhelp.
Sheisalready16yearsold.Butshe_______asifshewerestillalittlegirl.
Theengineersinthislabspentseveralweeks_______theirplansforthenewbicycle.
John_______tobeapoliteman.Butinfactheisveryrude.
