Why did the author and her si…——2014 高考英语第 54 题答案解析

【答案】Because they needed to put the mails into envelopes.

【解答】
Because they need to put the mails into envelopes。考查细节理解。根据文章第四段The night
before Dad's birthday, my sister and I stayed up late, putting everything together with some
envelopes可知作者需要把这些mails放入信封。