Would you be _______ to pick me up at four o'clock and take me to the airport?

You have to believe in yourself. Self-confidence is _____ to success.

There was a (an) __________ silence between us after we were left alone in the sitting-room.

Some experts think that language learning is much ___ for children as their tongues are more flexible.

--- What a beautiful day!--- Yes, it is _______ that I’d like to take a walk．