Insomecountriesopenc的精選

問題詳情：Insomecountries,opencampus(校園)iswidelyaccepted.Forexample,Frenchstudentshaveatwo-hourlunchbreakfrom11:30a.m.to1:30pm.Duringtheirlunchbreak,theycaneatathomeoratarestaurant.ButstudentsinthePhi...