时差反应是每个国际旅行者可能遇到的问题。翻译

Thefixedstarwasaplanet.（）

Heblamedhispoorperformance_____jetlag

Ataskofthepostofficestaffisto_(class)mailaccordingtotheplacesitistogo

We_____knowledgefromourfamilies,schools,jobs,andthemassmedia