Linguistscanconcentrateonalltheaspectsoflanguageatonce.

Accordingtothe"principles-and-parameters"theory,"principles"refertohighlyabstractpropertiesofgrammarwhichareappliedtolanguageingeneralandwhichgeneratephrasesandatthesametimerestrainthepowerofMovea,while"parameters"allowgeneralprinciplestooperateincertainrestrictedways,accordingtowhichparticulargrammarsofnaturallanguagesvary.

Thereisagrowingbodyofevidencetosupportthefactthatmostpeoplesufferfromalackofdaydreaming_______anexcessofit.

Johnsonwas________unknownbeforerunningforthepresidency.

Thevolunteerswouldrathergobytrainthan________.