Punctuation and hints

Question

It seems a few of the hints (la peinture, etc.) were one past the audio extract where they were needed.  Also, I find it unnecessary to correct punctuation, as where a comma should be placed is often not apparent from individual phrases unless you have the entire context.

Accepted Answer

Bonjour Dave,
Thank you for your feedback! I will pass it on to the language team. 
 
The hints help recognise the 'antecedent' (the noun/expression that 'qui' refers to) and that's why they are in the following sentence (qui résiste bien à l'humidité) and not in the previous one. 
As for the punctuation, remember: don't be too harsh on yourself when self-scoring especially when it comes to punctuation. It is indeed a harder thing to master. Concentrate on the actual content rather than the punctuation. 
See my answer to another similar question: PunctuationI hope this is helpful.
Bonne journée !