The country's official language is French. Only at tourist sites the employees will speak English but not the rest of the city, so it would be helpful if you spoke some French and carry a dictionary with you.
Remember, you can also download an app with common French words on your I Phone or Android.
you do speak some French try to speak slowly and clear, in the
beginning it seems like they speak too fast for us and we can't
understand. Before you leave for your trip it would be helpful to read
this book, "Almost French" by Sarah Turnbull, very interesting and