請問一段日子的介係詞是in嗎?

例如: 請問12月20-31日有沒有營業

是 Will you open in Dec. 20-31? 嗎? 謝謝

或者有沒有"請問聖誕節前後有沒有開?"這樣的說法，要包含"前後幾天"

You can use either of the following:- Will you be open on 12/20 through 12/31?- Will you open on 12/20 through 12/31?I prefer the former.

Shirley Hsieh 請問聖誕節前後有沒有開? = Will you be open before and after Christmas?Here's another example sentence for you:Most stores are open before and after Christmas but they will be packed.

謝謝 有例句更懂使用方法了