这种衬衫是用纯棉制成的，非常透气。

This shirt is made of pure ___cotton, which makes it very breathable.

这片地区的气候非常适合种植棉花。

The climate in this region is ideal for growing ___cotton.

这条裙子是由纯棉布料制成的。

This dress is made of pure ___cotton fabric.