英语作文周末去公园看见有的人正在跑步,有的人正在拉小提琴,有的人正在唱歌,描写这景象 50字左右

是用正在进行时么
Today is weekend,the weather is sunny.I'm going to the park .There are many flowers and trees.I see some people are running,some people are piaying the violin.Others people are singing songs.They are injoying the morning.I have a good time in the park.Today is a nice day!