TY  - BOOK
AU  - Kelley Anttila Elizabeth
TI  - English Structure Exercises  /Elizabeth Kelley Anttila
SN  - 0-8477-3300-R
PY  - 1978///
CY  - Puerto Rico : Universidad Of Puerto rico
KW  - 1.PRESENT PERFECT 2.PRACTICE IN QUESTIONS 3.CONNECTING WORDS
N1  - incluye índice; 1.The verb to be 2.Irregular verbs  3.Future tense
N2  - English Structure Exercises
ER  -