- 问题详情:Alotofpeoplelikekeepingpets.Themostcommonpetsthat71________(keep)throughouttheworldarecatsanddogs.Thefollowingarethemajoradvantagesofkeepingpets.Petslikedogsrequireregularwalkingandexerciseforproper72________(develop).Asyoutakeyourdogoutfor73...
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