such a good day 和such good day都可以?

such a good day 和such good day都可以? Such a bettle day It _____ a good idea to have a picnic on such a nice day! the weather isn't good enough for an outing such a bad day such a good experience & so good an experience都对吗? such a good news 还是such good news 公共英语2级改错题we haven't had such good a day as today for a long 为什么such a good time time可以加a Have a good day! such a good boy中such的词性? on such a lovely day .怎样翻译 but will there be such a day?