Towriteuphisnovel,Johnislookingforanenvironmentfree________outsidedistraction.
A、onC
free from… 使人摆脱…，不受…的，没有…的
Washingthefooddownwithwaterasasubstitute________chewingisnotagoodhabit
CollinsCOBUILDEnglishLanguageDictionary(1987)hassomeuniquefeaturessuchasdefinition,extracolumnand______.
Generally,adictionarycoversthefollowingcontentsEXCEPT______.
Theprofessorworkedfor7hoursata________.
He________hispoorjudgment________JetLag.
