1) must 2) might 3) can 4) Don’t have to 5) Needn’t have 6) Should 7) Might be Ving 8) May have 9) Must have been Ving 10) Won’t 11) may 12) could 13) Have to 14) Need to 15) Didn’t need to 16) Should have 17) May be Ving 18) Could have 19) Can’t have been Ving 20) Ought to

Modal verbs functions

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