Focus on grammar; a intermediate course for reference and practice / Sarah Lynn .- 2nd ed.
- White Plains, NY : Longman, 2000.
- v, 258 p. ; 28 cm.
0201346745
English language--Grammar--Problems, exercises, etc. English language--Textbooks for foreign speakers. English language--Grammar--Problems, exercises, etc.English language--Textbooks for foreign speakers.