TY  - BOOK
AU  - Fuchs,Marjorie
AU  - Bonner, Margaret
TI  - Focus on grammar 4: workbook 
T2  - Always learning
SN  - 013216941X
U1  - 428 
PY  - 2012///
CY  - Estados Unidos de América : 
PB  - Pearson, 
KW  - Inglés - Estudio y enseñanza
N1  - Nivel B2; Incluye índice, bibliografía; 1. Present and Past: review and expansion -- 2. Future: review and expansion -- 3. Negative questions, tag questions, additions and responses -- 4. Gerunds and infinitives -- 5. Phrasal verbs -- 6. Adjective clauses -- 7. Modals: review and expansion -- 8. The passive -- 9. Conditionals -- 10. Indirect speech and embedded questions
ER  -