CAN / BE ABLE TO
I'm not available tomorrow but I ______ (meet) next Monday.
I'm not available tomorrow but I CAN meet next Monday.
Adriana and her mother _____ (open) the door because it was locked.
Adriana and her mother COULDN'T the door because it was locked.
John broke his leg and ______ (walk) for the next couple weeks.
John broke his leg and won't be able to walk for the next couple weeks.
Frank ________ any Spanish when he got a job offer from a company in Spain. Now he is fluent.
Frank COULDN'T SPEAK any Spanish when he got a job offer from a company in Spain. Now he is fluent.
Scientists _____ (find) any signals from any form of intelligent life in space.
Scientists CAN'T FIND any signals from any form of intelligent life in space.
You ______ call anyone now. It's 03:00 am!
You can't call anyone now. It's 03:00 am!
Our team ____ (win) the cup six times since 2015
Our team HAS BEEN ABLE TO WIN the cup six times since 2015
Ben _______ (talk) to customers yesterday as he was a bit nervous.
Ben COULDN'T TALK to customers yesterday as he was a bit nervous.
Since the teenagers were partying very loudly, they _____ (hear) the doorbell when it rang.
Since the teenagers were partying very loudly, they WERE UNABLE TO HEAR / WEREN'T ABLE TO HEAR the doorbell when it rang.
Mike was the only one who _______ understand me.
Mike was the only one who COULD understand me.