Verb conjugation of "réfléchir" in French

In order to improve the language skills we changed some features on Vocabulix. From now on users can not only drill isolated lesson but adhere to a specific lesson plan. That means that they can set goals and seek help from other users.
Thank you for your email! A little question about yourself. How old are you? I think the Americans are using the word color and not colour, but I understand if you are not sure about it.
I owe it to my boss who allowed me to make many trips. In Argentina, I've been in many places, but unfortunately I have not seen enough of it yet. It is indeed a huge country, do you agree?