Tai lieu toi da chep cho lop roi, toi gui lai trong attachment.
Phan nhom: theo danh sach ma lop truong in cho toi.
thu tu tu 1->5: phan 4.1
6->10: 4.2
11->15: 4.3
16->20: 4.4
21->25: 4.5
26->30: 4.6
31->35: 4.7
36->40:4.8
41->45:4.9
46->50:4.10
51->55:4.11
56->60:4.12
61->65:5.1 va 5.2
66->70:5.3, 5.4, va 5.5
71->75: 5.6 va 5.7
76->80: 5.8
81->85: 5.9
86->90: 5.10
91->95: 5.11

Yeu cau nhu da noi o lop:
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