Can you tell me ______ live a low-carbon(低碳) life ?—-OK. By using both sides of the paper.

I play the violin _____ one hour every day.[ ]

I like reading in the city library ________ I often lose myself in a world of good books on weekends.

I can read English as_____as you.

On his way to the airport, it ________ him all of a sudden that he had forgotten her birthday.