The fireman (can/couldn’t/were able to) put out the fire. It was very big.
couldn't
(Could/ Can/ Are able to) ______ rabbits fly?
Can
Sure, I (can/ could/ 'm able) to start work tomorrow.
'm able
When my daughter was 7, she (wasn't able/ could/ can) to climb trees. Now that she’s 13 she does it easily.
wasn't able
I have a sore throat. I (can/ 'm not able to/ could) talk much.
'm not able to
When I met Alice and Tom, they (can't/ couldn't/ wasn't able to) dance well so they decided to take classes. Now they are good dancers.
couldn't
When I was young, I (can/ was able to/ couldn't) eat whatever I liked. I never got fat.
was able to
The athletes (could/can/are able) to compete tomorrow but they are not sure about it.
are able
My computer is broken. I (couldn't/ can't/ 'm not able) to send messages.
'm not able
You (could/can/couldn’t) count on me to help with the party.
can
I (can/can’t/could) believe he’s dead. He was so young.
can't