Do you know _______ World Water Day is?-On March 22ndA.when B.where C.what D.which 为啥是when,他不是做时间状语嘛（不做句子成分的吧）?可是is后面缺一个表语啊,

分类: 作业答案 • 2022-04-18 12:44:22

问题描述：

Do you know _______ World Water Day is?-On March 22nd
A.when B.where C.what D.which 为啥是when,他不是做时间状语嘛（不做句子成分的吧）?可是is后面缺一个表语啊,

答