I haven't ________ concentrate at work.
been able to
When she was 40, she _____ speak 6 languages.
could
Although he has never studied English, he _____ speak the language very well.
can
___________ (they) understand every language perfectly in the future?
Will they be able to
My brother is a chef in a Japanese restaurant. He _____ cook very well.
can
I _____ play the piano well but not as well as my brother.
can
When the car drove into the lake, one of the passengers _______ open the door and had to be rescued.
couldn't
After years of training, my sister _____ play tennis now.
can
We _________ play football in the park because it was raining.
couldn't
(Polite request) ______ you tell me what the time is please?
Could
She __________ come on holiday with us because she has broken her leg. It will take 6 weeks to heal.
won't be able to
If we finish all our homework tonight, _________ go to the party tomorrow?
will we be able to
Maybe the Johnsons ________ build a new house next year.
will be able to
He has a sore throat so he __________ do the Speaking Exam tomorrow.
won't be able to
________ he understand what you were talking about?
Could
When he was only 2 years old, my friend George ______ speak quite well.
could
They have lived in Paris for 3 years but they still ______ speak French.
can't
In the 1940s, machines ________ interpret the spoken word.
couldn't
Paul ____ help you to translate the text. He is free now.
can
Don't whisper! I _____ hear you!
can't
Don't shout! I ____ hear you!
can
Susan lived in Russia for 8 years so she _______ help you with your homework later.
will be able to
__________ (people) live forever one day?
Will people be able to
He ________ read when he was younger but now he ______.
couldn't, can