Rewrite these sentences, starting with the gerund. You may

need to change some words. (Напишить речення починаючи з герундія, можно змінювати слова)

It's very diffcult to windsurf properly.

It's more difficult to speak a foreign language than to read it

It is forbidden to walk on the grass.

On thing I can't do is swim on my back.

It's difficult to be polite to someone you don't like.