(-) I ________ help you tomorrow.
won't be able to
(-) I'm sorry, I _________ help you now. I am working.
can't / am not able to
(+) Maybe the Smiths ________ build a new house next year.
will be able to
(-) You ________ swim when you were 10.
couldn't / weren't able to
(-) I ________ to play the piano when I was 8.
wasn't able
(+) I don't think people ________ live forever in the future.
will be able to
(?) How long have you ________ drive?
been able to
(+) My brother ________ cook very well. He is a chef in a French restaurant.
can / is able to
(+) She ________ read when she was five years old.
could / was able to
(+) Last week we _____ go swimming, this week we can't.
could / were able to
(+) He's amazing, he ________ speak five languages, including Chinese.
can / is able to
(-) I _________ carry this table! It's very heavy!
can't / am not able to
(-) I _________ work well lately.
haven't been able to
(-) We _________ get to the meeting on time yesterday, because the train was late.
couldn't / weren't able to