WORKSHOP PRESENT PERFECT AND MODAL VERB SHOULD

FIRST ENGLISH WORKSHOP

http://elibrary.bsu.az/books_250/N_88.pdf

PRESENT PERFECT

UNIT 36, 37, 38 AND 39

http://elibrary.bsu.az/books_250/N_88.pdf 

SHOULD

UNITS 83,84 AND 85

SECOND WORKSHOP

PRESENT PERFECT

UNIT7 AND 8

PAGES 25, 26, 27,28

file:///C:/Users/ESTUDIANTE/Downloads/murphy_raymond_english_grammar_in_use.pdf

MODAL VERB SHOULD

UNIT 33 AND 34

PAGE  77, 78,79,80