Wearewaiting______yourreply______ourletter.
Itisdifficulttounderstandthiskindof_______calculation.
ltisoursincerehopethatyouwilldirectyourefforts__thepromotionofthisnewproductinyourmarket__ourmutualbenefit.
Thisofferisfirm,subjecttoyourimmediatereply____shouldreachusnotlaterthantheendofthismonth.()
Somelinguiststhoughtthatalllanguages______andwereruledbyacommongrammar.