Living / city / busy/ living / mountains. thành phốĐoạn văn18/80Living/ city/ busy/ living/ mountains. Living in the city is more busier than living in the mountains. Living in the city is as busier than living in the mountains. Living in the city is much busier living in the mountains. Living in the city is busier than living in the mountains.Giải thíchĐáp án đúng là D