好好学习，天天向上用英语咋说咧？

Study hard and improve everyday

Study well and make progress every day

Study hard, and keep a positive position every day.

Work hard, and make much more progress every day!

呵呵，如果说的有趣一点的话是：
good good study, up up everyday....这个比楼主说的day day up至少押韵

正式的话： study hard,progress everyday.

progress是可以做动词的