How making our work environment talking in English

Actually I’d like to make my work environment is talking in English, but I don’t know how I can start. When I’m starting to talk to them in English, they rarely reply/communicate to me in English.

What is your co-workers’ native language and what industry do you work in? To answer your question I need a little more information about you and your company. Many thanks,

TOEIC listening, photographs: An African child on a tree[YSaerTTEW443543]