ASIR AND DAW: MUST, CAN, NEED
ALL MIXED UP
http://www.myenglishpages.com/site_php_files/grammar-exercise-modals.php#.VMdug0eG87g
DEDUCTION (not in the book)
http://www.tinyteflteacher.co.uk/learning-english/grammar/exercises/modal-verbs-deduction.html
http://www.myenglishpages.com/site_php_files/grammar-exercise-modals.php#.VMdug0eG87g
DEDUCTION (not in the book)
http://www.tinyteflteacher.co.uk/learning-english/grammar/exercises/modal-verbs-deduction.html
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