What ______ they ______ for? They were used for ______ in the dark.

2．它用来挖冰激凌。

It is used for _______ ice cream.

3．带可调整鞋跟的鞋可以改变鞋的类型。

The shoes _______ _______ heels can _______ the styles of a shoe.

4．你认为最有用的发明是什么?

What do you think is the ________ _______ _______?

5．想象一下你一个人在小岛上。

Imagine you are _______ ________ a tiny island.