These are topics you need to study to pass an exam at B2 level, such as Cambridge English Preliminary:
Adverbs
Both, either, neither
Broader range of intensifiers; So, such, too, enough
Comparatives and superlatives
Question tags
Conditionals, 2nd and 3rd
Connecting words expressing
cause and effect, contrast etc.
Embedded questions
Future continuous
Modals - must/can’t deduction
Modals – might, may, will, probably
Modals – should have/might have/etc
Modals: must/have to
Past continuousBoth, either, neither
Broader range of intensifiers; So, such, too, enough
Comparatives and superlatives
Question tags
Conditionals, 2nd and 3rd
Connecting words expressing
cause and effect, contrast etc.
Embedded questions
Future continuous
Modals - must/can’t deduction
Modals – might, may, will, probably
Modals – should have/might have/etc
Modals: must/have to
Past perfect
Past simple
Past tense responses
Phrasal verbs, extended
Prepositions of place
Present perfect continuous
Present perfect/past simple
Reported speech (range of tenses)
Simple passive
Wh- questions in the past
Will and going to, for prediction