.No teachers are permitted ________ in the classroom or in the office.
Everyone_____dohisbesttomaketheworldsafeandclean.
Heaskedmeifhe_____openthewindow.
Sincetheroadiswetthismorning,_____lastnight.
IncaseI_____,Iwouldtryagain.
He_____finishedearlier.