<p>Con làm các câu 1,2,4,9 trang 9,10 phần bài tập tự luyện<br>https://drive.google.com/drive/folders/10taunm9B14q8MnBtVBZOfyeZrHkwtpw…;

<p>https://drive.google.com/file/d/14chLETFO5AEZlEXUFLZQUIJ7QSdKoAGc/view?…;

<p>https://drive.google.com/file/d/14chLETFO5AEZlEXUFLZQUIJ7QSdKoAGc/view?…;