Level C1. Focus on advanced conditionals with modal meaning, including should, were to, had it not been for, but for, otherwise, and inversion.

Level C2. Topic: advanced deduction and speculation. 12 multiple-choice gap-fill sentences. Exactly two questions have two correct options.

Level C1. 12 gap-fill questions. Exactly 3 options per question. Exactly 2 questions have two correct options.

Level C2. 12 gap-fill questions. 3 options each. Exactly 2 questions have two correct options.

Level C2. Exactly 12 gap-fill sentences, each with one blank. Exactly two questions have two correct options.