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.