The first topic at the meeting is that we should treasure the water resource.
A. put out
B. put off
C. put on
D. put forward
网友回答
A. put out
B. put off
C. put on
(答案→)D. put forward
解析：动词短语辨析。A扑灭，生产，出版；B推迟；C增加，上演；D提出；句意：在会议上被提出来的第一个话题就是我们应该珍惜水资源。故D正确。