Unit 12: How often (C1,2,3,4)Tranh, bảng phụ, cassetteUnit 12: How often (C5,
6)Tranh, bảng phụ, cassetteUnit 13: Activities -The weatherand seasons (A1,2)Unit 13: The weather and seasons(A3)Unit 13: The weather and seasons(A4)Unit 13: Activities in seasons (B1)Unit 13: Activities in seasons ([r]