PRACTICE UNIT 3

-Modal verbs: obligation
-Modal verbs of obligation
-Modal verbs expressing obligation
-Modal verbs of deduction
-Modal verbs: deduction
-Modal verbs of deduction
-Ability and possibility
-can, could, be able to
-All modal verbs
-Modal verbs: different links to activities
-Mixed modal verbs
-Mixed modal verbs: theory and practice
-Mixed modal verbs
-Adjectives: -ing/-ed
-Adjectives: -ing/-ed
-Describing people: physical appearance
-Describing people