阅读下面的日记，然后用数字给句子排序。
Today is April 15th. We put some seeds into a pot. We put in some water, too. Now it's in the sun. April
21st, we're so excited. We can see a sprout! It's so lovely. In several days, our plant has two green leaves.
May 15th, our plant is one month old. It's tall and strong.
( ) Water it.
( ) We can see a sprout.
( ) Dig the soil and put some seeds in the soil.
( ) We can see a big plant.
( ) We can see two green leaves.
( ) Put the pot in the sun.