_________has been announced,the competition will be held in Zhengzhou in 2007.

分类: 作业答案 • 2022-01-09 18:03:57

问题描述：

_________has been announced,the competition will be held in Zhengzhou in 2007.
A、 That
B、 As
C、 It
D、 What
请说明理由.

答

B!相等于which,是定语从句,放在句首用as.
如果选A,C,逗号处必须换成that.
D就更不对了.