Correct: We use "should" for advice. , We use "have to" for external obligations., We use "should" for suggestions., We use "mustn't" for prohibition. , We use "not have to" for lack of necessity., We use "can" for ability and permission. , We use "shouldn't" for negative advice, We use "must" for internal obligation, Incorrect: We use "should" for obligations., We use "should" for possibility., We use "can" for advice., We use "shouldn't" for prohibition., We use "not have to" for necessity., We use "shouldn't" for prohibition, We use "not have to" for rules,

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