题目

根据短文内容，补全文中单词或用所给单词的正确形式填空     Can you think of a new type of transportation? Now, here's one from Danny. He took one of his old (backpack). He bought ten donuts as fuel and p them into the backpack. With it on his back, he could j into the air. It was the same as a plane. And one donut could c him one kilometre. He thought donuts were the (good). Do you know why? Aha, donuts are his favourite. 答案：【1】backpacks【2】put【3】jump【4】carry【5】best

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