Oneoftherequirementsforafireisthatthematerial____toitsburningtemperature.
Thelittleboydidn’tknow_______.
____Thewaterleftinthekettle,thedoctorputseveralthingsheunwrappedfromahandkerchief.
—Haveyoufinishedthework?
—Notyet,butnomatterhowharditis,we'llkeep___untilwemakeit.
Theforeigners_________there,butthey_________thefoodthereatfirst.
