mình nghĩ olm nên tích những bài này
-http://olm.vn/hoi-dap/question/296448.html
-http://olm.vn/hoi-dap/question/296345.html
-http://olm.vn/hoi-dap/question/296444.html
Haizz..Đắng lòng
Hôm nay mk đã cố gắng giải nhìu bài vậy mà toàn k đc like
vào xem nha
http://olm.vn/hoi-dap/question/157653.html
http://olm.vn/hoi-dap/question/157674.html
http://olm.vn/hoi-dap/question/157674.html
http://olm.vn/hoi-dap/question/678050.html
http://olm.vn/hoi-dap/question/427694.html
http://olm.vn/hoi-dap/question/290001.html
http://olm.vn/hoi-dap/question/174724.html
http://olm.vn/hoi-dap/question/186897.html
http://olm.vn/hoi-dap/question/187748.html
http://olm.vn/hoi-dap/question/357442.html