Level C1. Topic: advanced contrasts between present perfect and present perfect continuous in realistic contexts. Exactly 12 questions. Exactly 2 questions have two correct options.

Level C2. 12 questions. Exactly 2 questions have two correct answers.

Level C1. 12 gap-fill multiple-choice items. Exactly two items have two correct answers.

Level C1. Topic: choosing between simple, continuous, perfect, and perfect continuous aspects to show duration, completion, repetition, and relevance in longer contexts.

Level C2. Focus on advanced modality and evidential meaning in natural, context-rich sentences. Exactly two items have two correct answers.