My French: Right Or Wrong. Trivia Quiz

Answer: L'annee derniere, c' etait ma derniere annee d' etudes

Last year = l'annee derniere . The last year of ...etc. = la derniere annee de ...

Answer: Des robes marronnes

Some more recent adjectives tend not to be 'gender-sensitive'. Marron is such an adjective. Other examples in this line from Malraux 'Les Conquerants': des oriflammes de soie grenat,vermillion, carmin. Especially in the plural such adjectives remain unchanged. Grevisse mentions as totally impossible: des chaussures marronnes {;} des robes grenates. Orange is a 'dubious case'. Loti writes :robes rouges,vertes ou oranges. Boris Vian writes: Longs filets orange.

Answer: Elles etaient tout oreilles

'Tout' is an adverb here, meaning 'completely', and it is not 'number' or 'gender' sensitive. You might also say "Elles étaient tout ouïe" (by the way: tout is the adverb in this context.).

Answer: Ta solution etait plus mal que la mienne.

'Mal' is an adverb and cannot occur in the role of an adjective. 'Pire' differs from the other phrasings as it may mean 'harmful' rather than just ' incorrect' or 'inefficient'.

Answer: six heures trois quarts

Sept heures moins le quart is probably the most frequent phrasing. Grevisse sub 586 calls 'moins quart' 'regional' and 'rare' but does not consider it to be archaic. He kind of stigmatizes it as "Belgian French" - which does not seem to do justice to many other areas where this is a current phrasing. Anyway it's only the phrasing "six heures trois quarts" which he calls "vieilli". Many speakers of French will probably prefer to sin by regionalism than by archaism.
By the way 'six heures trois quart' is an incorrect spelling.

Answer: En general on commence par faire une petite reconstruction de l'accident.

'Les oiseaux commencent a chanter' is a normal French sentence. But when you want to describe an action as 'the first step in a procedure' then 'par' is the correct preposition.

Answer: There exists a God.

'He is like a god',would be: 'C'est un dieu' (without capital letter). 'God will see to that ' might be rendered by 'C'est l'affaire de Dieu'. 'He thinks he is God Himself'= 'Il se croit Dieu Lui-meme'. 'Il est un Dieu' is equivalent to 'Il y a un Dieu' or also 'Dieu existe.' French grammar has no equivalent of this particular English use of 'there'.
If NOT spelled with capital letter it can mean: "He is a god" , in the sense of "He is like a god". Compare: "She is a goddess".

Answer: Ils sont partis pour la mer.

When a verb describes a 'movement towards a certain destination' French verbs tend to have 'etre' as an auxiliary rather than 'avoir'. In a similar way ' I have begun' is rendered by 'Je suis commence(e)'.

Answer: Though she is a farmer's wife

'Pour' can have many different meanings: 'Il est malade pour avoir mange trop de fruits' = He got sick because he had eaten too many fruits. 'Il faut manger pour vivre' = One must eat in order to live. Sometimes it even is not to be translated: 'Qu'as tu donc pour me regarder tout le temps?'= Why are you looking at me all the time.

Answer: I have to pay a hundred dollars.

'Il me faut' + NOUN GROUP (e.g.cent dollars), would mean: 'I need (e.g. a hundred dollars).' 'Il me faut' + VERB , describes the personal obligation you are under. 'Il faut' + verb describes a general necessity. Example: 'Il faut toujours faire attention dans ces cas-la.' 'Il te faut me payer cent dollars' = 'You must pay me a hundred dollars'.