Question

we'll have lunch soon什么意思

We'll have a B holiday soon.A)three days B)three-day C)three-days D)three days' 为毛不选D,
还有D选项什么时候用.怎么用.

Answer 1

这种结构一般都要用连字符号的,作为一个词放在名词的前面.
可以是：a holiday of three days
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