China added 50.9 million Internet users in 2012， the total to 564 million at the end of last year.
A. brought
B. bringing
C. having brought
D. to bring
网友回答
A. brought
(答案→)B. bringing
C. having brought
D. to bring
解析：句意：中国互联网用户在2012年增加了5 090万，截止到去年年底总数达到5.64亿。此处用bring的ing形式作结果状语表示自然而然的结果。