题目
英语单选语法题求助!
oct,1st,（ ）is our national day,is always celebrated with singing and dacing
A.as B.that C.when D.which
为毛选D不选c?
oct,1st,（ ）is our national day,is always celebrated with singing and dacing
A.as B.that C.when D.which
为毛选D不选c?
提问时间：2020-07-29
答案
在这里which是做主语,指代oct,1st,.如果把句子变成两句,你就更清楚了：
1 Oct,1st is our national day 2 Oct,1st is always celebrated with singing and dacing.
如果用when,就成了 on Oct,1st --------做时间状语了,所以不能用when.
1 Oct,1st is our national day 2 Oct,1st is always celebrated with singing and dacing.
如果用when,就成了 on Oct,1st --------做时间状语了,所以不能用when.
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