問題詳情

77. 許多西方人每天花好幾美元在寵物身上,而世界人口有三分之二一天卻只能靠不到兩美元過活。Many Westerners ______________ several dollars a day __________ their pets w____________ ___________________ of the world’s population lives _____________ _______________ than two dollars a day.

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