Tìm và sửa lỗi sai

i'm twenty one year old and i'm a worker
she and he goes to work on foot
that 's my sister over there. she stands next to the window
let's going shopping
my friends doesn't like watch tv after school
he is the tallest of the two boys
there is an big eraser on the desk
we aren't understand what you are saying
we can't go our because it rains