Seven days ____a long time,I thinkA:areB:isC:have been为什么说明一下理由奥!有分

Seven days ____a long time,I thinkA:areB:isC:have been为什么说明一下理由奥!有分 lon days here,gruadition of grandson 请翻译中文 seven-day seven-days seven day各有什么区别 The name of seven days. seven Days 怎么读的? In Only Seven Days 歌词 Seven Days A Week 歌词 There are seven days in a week对seven提问 What did you do during the _____ holiday?A)seven day B)seven days C)seven-day D)seven-days We will have a ___holiday A seven day’s B seven―day C seven―days D seven days seven days的中文翻译歌词Craig David the name of seven days的意思 The name of seven days 是什么意思 Let us name the seven days seven days的中文翻译歌词(Craig David) let's name the seven days. seven years and fifty days的歌词 求音乐：seven years and fifty days