TheWesternCouncilforTravelResearchin_______employedthetermvisitor.
______aretheprimarydestinationsfortheChineseatpresent.
InEurope_______arethetwoleadingcontendersforaglobalreservationssystem.
Chinaisamountainouscountry.Hills,mountains,andplateauscover_______ofthetotalarea.
Scientistsdoubtwhetherit’s________toregulateone’sbiologicalclockbydrinking.