Everyone have a memory . That is why we can sill remember many things .
Some people have a good memory . They can sill remember many things for a long year later . But some people have a bad memory . Maybe they just doing the things , but a minute later , they will forget it quicky .
As for students , it is very important to study over and over again . It can impover your memory well . Also , memory will become better when we do more exercises .