Severalloudspeakersare_______fromtheceilingandwecanhearthespeakerveryclearly.
A、connectedManykindsofanimalsarebelievedtohave_________fromtheearth
Asateacher,youshouldnot_______thestudentsfromaskingquestionsinclass.
Thisriverissobigthatitisimpossibletobuilda_______underitwithoutmoderntechnology.
John_______tobeapoliteman.Butinfactheisveryrude.
Whenmakingmoderncameras,peoplebeganto_______plasticsformetal.
