【题目】读下列句子，将它们重新排列。
（_______）They build the flying machine.
（_______）They watch how the birds fly.
（_______）They want to invent a flying machine.
（_______）The flying machine flies like birds.
（_______）They draw a picture of their flying machine.
【答案】4 2 1 5 3
【解析】
略
