End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
Hướng dẫn ôn thi TCF (3): thi đọc http://buubize.com/tieng-phap/huong-dan-on-thi-tcf-3-thi-doc.html