改错：it is that a boy?

改错：it is that a boy? Whose is that boy?改错 改错改错Is that a pencil case?Yes,it's. 改错：Is that boy you student? That boy is a little ( ) 改错：What good a boy he is! Is Tom a Canada boy?怎么改错? he is a interesting boy 改错 改错：1\Because it is very cold ,so Icatch a cold 2\The boy loo It reveals the plain fact that he is a boy,isn't it?这句话对么? who is that boy,()is lee,that;this;it;he It is only natrual that ___.A the boy did such a thing B the