Grammar in Use  is a highly successful two-level grammar series known for its clear explanations and unique format. The Grammar in Use workbooks provide students with further opportunities to practice difficult grammar points and to consolidate their understanding of related grammar issues. The workbooks also include review sections for each group of units in the student books. These groups, such as The Present Perfect, Modals, and Articles, are listed in the table of contents of each student book. "The Basic Grammar in Use Workbook is available with and without answers."