问题补充：
New Year’s Eve, people gather at Times Square to see the huge glass through the darkness.
A. On, fall
B. In, falling
C. On, falling
D. At, fall
答案：
A. On, fall
B. In, falling
(答案→)C. On, falling
D. At, fall
解析：句意：在除夕夜，人们聚在时代广场上看巨大的玻璃穿破黑暗降落。节日用介词on,fall through落空，现在分词做宾补表正在发生，故选C.
