new teacher!

my science teacher said he must go to study,so we all cried like a baby.After he has go,we have no teacher at science class.So,we just wait until new teacher came.Two days ago,we have a new teacher!Name is Teacher Tan.He is the tallest teacher in the school.He is a good teacher,because is not too fierce.We havent know this teacher good or bad,but at least is good for us.