Using a CATALYST can generally speed up or slow down the rate at which a chemical reaction occurs if thats what your asking.
Elle aime faire de l’équitation
Bonjour
Tu peux visiter le zoo <u>de temps en temps</u>.
<em>quelquefois = sometimes</em>
<u><em>de temps en temps </em></u><em>= </em><u><em>from time to time</em></u><em> ► </em><u><em>CORRECT</em></u>
<em>d'habitude = usually</em>
<em>deux fois par semaine = twice a week</em>
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<em>☺☺☺</em>
French is my first language i can help you but i don’t understand what the question is