I'm very tired. I ______ sleep since Friday. (present perfect tense; negative)
haven't been able to
He ____ speak until he was three years old. (past tense; negative)
wasn't able to / couldn't
We ____ do the English exercises. They were too difficult. (past tense; negative)
weren't able to / couldn't
I've always wanted _____ speak another language. (infinitive)
to be able to
I forgot my phone so I ____ call you. (past tense; negative)
wasn't able to / couldn't
It was a very difficult soccer match. But, in the end, we ____ win.
were able to
Now that she has lived in her own apartment for the last three months, she ____ cook really well.
is able to / can
The firefighters _________ rescue the cat that was trapped in the tree.
were able to
__________ reserve a table at the restaurant?
Have you been able to
The doctor _________ see you right now. He has another appointment at the moment.
can't / isn't able to
I _________ call him because my phone does not work.
can't / am not able to
She ________ to walk since she was 10 months old.
has been able to
He ________ speak to her because she wasn't there.
wasn't able to / couldn't
Will you ________ attend my wedding?
be able to
I _________ accept the job because it was too far away.
couldn't / wasn't able to
We need someone who _________ speak English very well.
can / is able to
