The sumpermaket (is open ) from 9am.To 9 pm every day.为什么要用is open不用open可是open的过去分词不是opened吗？

The sumpermaket (is open ) from 9am.To 9 pm every day.为什么要用is open不用open可是open的过去分词不是opened吗？ The tiger is the ( ) The [ ]is [ ] [ ]the hospital. The past is the The thing is the The girl is cap is the face is love ,the face is The ant is ().But the tiger is (). as is the huaband ,so is the the universty is the university is open The ( ) is thin,the( ) is thick. The closet is near the what is the the love The first is always the The moon is ------ ---- ----- the earth. the fat is on the the chair is( )the desk. The apple is the tree