Collocations make and do (P.14, 15), Present Perfect Simple
Present Perfect Continuous (p.12), Making Comparisons (p.19), Adjectives with -ed and -ing (p.22, 23), Past Simple & Past Continuous & used to (p.31), At, in, on, in time phrases (p.34), So and Such (p.43), too and enough (p.44-45), Countable & uncountable nouns (p.68)
And much more through reading, listening and speaking!