Further out in our Solar System are four huge gas planets, while distant Pluto, (6) _________planetĐoạn văn43/108Further out in our Solar System are four huge gas planets, while distant Pluto, (6) _________planetthe smaller smallest the most smallest the smallestGiải thíchso sánh hơn nhất với tính từ ngắn: the adj-estChọn D