\u0110\u1ec1 thi – \u0111\u00e1p \u00e1n ch\u00ednh th\u1ee9c t\u1ea5t c\u1ea3 c\u00e1c m\u00f4n k\u1ef3 thi t\u1ed1t nghi\u1ec7p THPT 2021<\/a><\/blockquote><\/iframe>