Pleasebeserious.Iamnot_______.Youshouldconsideritcarefully
Thismorningintheclass,ourteacherlosthis______atlastbecausehecouldnotstandanymore.
Sometimesitisverydifficultto_______someoftheEnglishwords.Eventhenativespeakercannothelp.
Asateacher,youshouldnot_______thestudentsfromaskingquestionsinclass.
IntheUnitedStates,theforeignpolicyisdecidedbythe________government,notbyeachstate.
Manykindsofanimalsarebelievedtohave_________fromtheearth