Richard Powers’ The Echo Maker, ____ novel set in ___ small town of Kearney, Nebraska, US, has won the 57th US National Book Award for fiction.
28. Vitamin D helps our bodies make a special chemical, and this special chemical, _______, affects our brains, making us feel happy.
27. Do you know what use people _______ pines after they’re cut down?
26. My parents will move back into town in a year _______
25. John, _______ money is no problem, still leads a simple life.
24. Great attention must be paid _______ welfare, especially in the poor area.