PEOPLE HAVE TRIED OUT LI-FI TO CONNECT TO THE INTERNET SINCE 2011....

Tiếng Anh Đề thi HK1 Tiếng Anh 10 năm 2018 – 2019 trường THPT Đoàn Thượng – Hải Dương -

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29. People have tried out Li-Fi to connect to the internet since 2011.

 Li-Fi has been tried out to connect to the internet since 2011