―Did you hear the news this morning?
―Oh, yes, was announced on the radio has caused great excitement among pupils.
A. that
B. what
C. something
D. all what
网友回答
A. that
(答案→)B. what
C. something
D. all what
解析：“今天上午你听到这个消息了吗？”“听到了。收音机里广播的在孩子们中间引起了很大兴趣。”what 引导主语从句同时在从句中作主语，答案B。