TheWesternCouncilforTravelResearchin_______employedthetermvisitor.
C
暂无解析
Scientistsdoubtwhetherit’s________toregulateone’sbiologicalclockbydrinking.
Heshookhandswiththevisitors________astoconveyhisapology.
Bythemiddleofthe21stcentury,thevastmajorityoftheworld’spopulationwillbelivingincities_______inthecountry.
_______ in thought, he almost ran into the car in front of him.