The sentences with numbers have a mistake. find and correct it. ( 1 ) before you go somewhere you need to learn about the places you going to visit. ( 2 ) you can learn about different countries and the parts they divided into. (3) you can learn what these places are famous from. (4) some places is named after famous people (5) it is good if you are knows something about them.

( 1 ) Before you go somewhere you need to learn about the places you are going to visit.
( 2 ) You can learn about different countries and the parts they are divided into.
(3) You can learn what these places are famous for.
(4) Some places are named after famous people
(5) It is good if you know something about them.