https://www.youtube.com/edit?o=U&video_id=r_N33fyFhrA
https://www.youtube.com/edit?o=U&video_id=mkAQCR38Sj8
https://www.youtube.com/edit?o=U&video_id=r1K26kVm2aM
https://www.youtube.com/edit?o=U&video_id=06QJRVfnqs4
https://www.youtube.com/edit?o=U&video_id=uk41rjLGPIg
https://www.youtube.com/edit?o=U&video_id=QzAKDZnYKiw
https://www.youtube.com/edit?o=U&video_id=68Hd7gsrU9c
https://www.youtube.com/edit?o=U&video_id=_FdUh7YNzuU
Các bạn xem ủng hộ kênh của Online IOE Việt nhé,đây là 1 kênh khá hữu ích cho các bạn thi IOE đấy nhé.
1) C
2) A