French language Q&A Forum

A couple of questions:

En forme et en bonne santé- is this a standard spelling despite the masc noun animal?

I struggle with the passive voice..."par" is supposed to be a signal of it....is "the rules have to be established" a passive voice? Why isn't the answer ....is faut que les règles établissent?

Thanks so much for your help with this

Why here we cannot use neuf, it is a new bike so it has not been used.Futhermore it is not living things, neuf here sounds make sense.

Why is de soeurs correct instead of des soeurs?

I had written 'Il me faut aller sur le toit', which Kwiziq corrected to 'Il faut que j'aille sur le toit'. I know the construction 'il faut + subjunctive', but could you not use the infinitive when there is the same subject in the main and relative clause? Or does the meaning of the sentence change? Thank you 

If there are multiple adjectives after c’est, do they gender match the subject?

In this exercise the sentence including "pouvoir payer"...why is this not "je ne peux pas?"  Also later in the dialogue when referring to M. Duport was his representative, the dialog uses present tense C'est not C'etait.  why?

I was doing an exercise about what in subject, the phrase was: Jacques est descendu du haricot magique". I translated it as "Jack climbed down the magic beanstalk" and the system told me that the correct answer was "Jack got off the magic beanstalk". Why?

Statement: ...Je me sens beaucoup mieux !  Question: Tu sens une différence ?

Why does the question use sentir and not se sentir (ie, "Tu te sens...)?  Is it because the statement is about feeling better ("internal" feeling) and the question is about feeling a difference (perceiving something)?  Would "Tu te sens mieux ?" be a correct way to ask if someone is feeling better?