囲みの中の語を使って、 本文の内容を要約してみよう。 英文を聞いて、 答え The Inca city, Machu Picchu, has been a World Heritage site since 1983. The Incas made (1 (② ) with stones. There is a big stone with an interesting ). It had something to do with the (3 ). They made it without iron tools or wheels. Also, they made terraced fields and lived in (4 ) with nature. harmony sun shape buildings