We _______________ play tennis because the weather was bad.
couldn't
In the future robots _______________ have conversation with us.
will be able to
She ¬¬_______________ go on holiday next month if her parents give her permission.
will be able to
Tom _______________ listen to music because his CD player was broken.
couldn't
I was so tired that I _______________ sleep immediately.
could
My dad _______________ go to work because he was ill.
couldn't
