1 needn't 2 must 3 should be 4 should 5 doesn't have 6 musn't 7 should 8 should 9 have to 10 shouldn't 11 musn't 12 don't have to 13 needn't 14 Shall 15 has to
1 needn't 2 must 3 should be 4 should 5 doesn't have 6 musn't 7 should 8 should 9 have to 10 shouldn't 11 musn't 12 don't have to 13 needn't 14 Shall 15 has to