Why do new lessons appear in a completed unit?

Sometimes we expand a course by adding new lessons to an existing unit.

When this happens, you may see “not completed” items in a unit you previously finished — this is normal.

Your progress is not lost

All the lessons you completed before remain completed.

The new lessons are simply additional content you can explore anytime.

Why this happens

We regularly update courses to:

  • introduce new topics
  • improve existing content
  • expand grammar and vocabulary coverage
  • offer more practice variety

This helps keep your learning experience fresh, up-to-date, and more effective.

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