–Can you guess if they ______ to play basketball with us? –I think they’ll come if they _____ free.
Teenagers _______ allowed to drive in the street .
I don't know _______.Can you tell me________?
That's very kind ______ you. I know it's very hard _______ you to do that.
David used to _____________ in the afternoon.
How do you study _______a test? I study _______working with friends.