1. Grammar Book : p. 36,37 (theory of Present Perfect Simple, p. 40 (theory of Past Simple and Present Perfect), p. 43,43(theory of Present Perfect Continuous, p. 47(theory of Present perfect Simple and Present Perfect Continuous. p. 51,52 (theory of Clauses of contrast)
2. Companion: p. 33-40 (Revise the vocabulary)
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