翻译：fyoumakeusanofferatcompetitivepriceswecansellalargequantityofchemicalproductinourdistrict.
Alinguistictheoryisconstructedaboutwhat______isandhowitworks.
Werefertothelimitedrangeofsoundsasthephonicmediumoflanguageandindividualsoundswithinthatrangeas______.
翻译：Wesendyouabrochureonthevariouskindsofbicyclenowavailableforexport
Lyingundertheskull,thehumanbraincontainsanaverageoftenbillionnervecellscalled______.
