French language Q&A Forum

I kept getting corrected for using a capital letter after the "-" at the start of a line of dialogue. But it was frustratingly inconsistent—later I would get corrected for not using one. And the final text is displayed with capital letters in all cases. What's going on/what's the rule?

This lessons specifically states that: 

To conjugate apparaître in Le Passé Composé (Indicatif), both auxiliaries avoir and être are perfectly valid and interchangeable while the meaning remains the same.  In terms of usage, être is used more often than avoir in colloquial speech.  

I've seen the comments below about one is used more for appearing, but why is mine wrong?

Soudain, j'ai apperu derrière eux

Is it acceptable to say 'nuits hivernales' here?

Pam

For this Kwiziq question I put: Katie appelle Sonia au cas où elle aurait du retard

It was marked wrong, but I think that should also be accepted? avoir du retard = to be late

Nick

p.s. is it less common to use avoir du retard than être en retard?

ce gars parle trop vite!

If I remind you of your nanny is 'Je vous rappelle votre nounou.' What is 'I remind your nanny of you'? Is it 'Je rappelle vous à votre nounou' but I don't think this is correct!

Could the following phrase given above:

Merci à Léa et Julie, sans l'aide desquelles rien n'aurait été possible

also be phrased as:

Merci à Léa et Julie, sans desquelles rien n'aurait pu etre possible

It was in another new year exercise but not this one. Why not?

Why is there a "DE" here? Is the expression "fait de qch"?