It is important that we review the lessons several times before the test.

If you're looking for a different structure or additional ways to express this idea, here are a few variations:

1. It is essential for us to review the lessons multiple times before the test.
2. It is crucial that we go over the lessons several times before the test.
3. It is vital that we study the lessons repeatedly before the test.
4. It's necessary for us to revisit the lessons a few times prior to the test.

Let me know if you need anything else!