全部

1·I had no shoes except flat-heeled school shoes and tennis shoes.

我也没什么鞋，只有学校发的平跟鞋，还有球鞋。

2·I had no shoes except flat-heeled school shoes, and tennis shoes.

我也没什么鞋，只有学校发的平跟鞋，还有球鞋。

3·If you don't like to wear sneakers, you can choose flat-heeled shoes instead.

如果你不喜欢穿球鞋，你可以选择平底鞋来代替。

4·Do you prefer flat or high-heeled shoes?

你要平跟鞋还是高跟鞋？

平底的

1·If you don't like to wear sneakers, you can choose flat-heeled shoes instead.

如果你不喜欢穿球鞋，你可以选择平底鞋来代替。