Ability & possibility
Her mobile has been switched off all morning, so I _____________ talk to her yet.
haven't been able to (PRESENT PERFECT)
I don't like noisy bars. I like _____________ have a conversation without shouting.
being able to / to be able to (GERUND / INFINITIVE)
I ____________ leave home when I get a job.
will / 'll be able to (FUTURE SIMPLE)