People living in the desert choose to keep their ancient lifestyles and customs, _______people in cities throw away their cultural traditions

ung lady responded to my greetingwith a ______ look as if I were air, which made me feel somewhatembarrassed

n the 100 meters in 991 seconds, andI have not seen _________ this year

The new policy allows a couple to have a second birth _____either is an only child.

_________ a kite makes the boy_________ very happy．