Grammaire Progressive du Français A2-B1 Intermediate (Livre)
Approx $43.66 USD
This grammar is the most widely used worldwide and has been a table-coffee book for millions of students since its publication.
Covering both A1 and A2 levels, it can be used as from A1.3 until B1.1 classes.
Mixing grammar explanations in a simple language, and hundreds of exercises in use, it also contains an audio CD and a "web-livre" (online e-book version).
Keys come in a separate booklet.