1must 2couldn't 3are not able to 4could 5mustn't 6was able to 7Can 8could 9mustn't 10was able to
№2
1can 2been able to 3can 4to be able to 5can 6could 7can 8can 9can't 10can
№3
1mustn't 2Are you able 3must 4can't, must 5wasn't able 6mustn't 7can 8has 9can 10 to be able