Level C2. Topic: inverted conditionals, conditional linkers, and implied conditions without if. Exactly two questions have two correct answers.

Level C2. Exactly 12 gap-fill items. Exactly 2 items have two correct answers.

Level C1. 12 gap-fill questions. Exactly 2 questions have two correct answers.

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.