This is your homework for next class after Christmas holidays:

Download and print the different worksheets, read the grammar explanations and do all the exercises. Finally, correct yourselves with the answer key. We will deal with all your doubts and questions in class after the holidays.

Unit 19: can, could, be able to, may, will, shall

Unit 20: must, can’t, may, might, could

Unit 21: must, have to, mustn’t, don’t have to

Unit 46: should, ought to, had better

Answer Key