CEFR B2; focus: register shifts between formal, neutral, and informal English.
Exercises
Colligation Pattern Recognition Exercise
C2 colligation pattern recognition: each item targets a lexical item or phrase that conventionally selects a particular grammatical pattern.
Adverb Position Exercise
A2 adverb position: frequency adverbs, adverbs with be, auxiliaries, and common time/place positions.
Deontic Modality Exercise
CEFR C1; focus: deontic modality.
Ellipsis and Substitution in Advanced English Exercise
C2 ESL multiple-choice gap-fill exercise on ellipsis and substitution.