3. Напишите отрицательные предложения. (18, §27) AEDNC → She won't dance.

This instruction, "Напишите отрицательные предложения" (Write negative sentences), indicates a grammar exercise focused on negation. The example provided shows a positive sentence ("She won't dance.") which is already negative, suggesting the task might be to convert affirmative sentences into negative ones or vice-versa, or to complete a set of negative sentences based on given prompts.