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? he is so a naughty boy that he is a regular mischief.咋改错 it is a boy? 改错：What good a boy he is! Is Tom a Canada boy?怎么改错? he is a interesting boy 改错 How a nice boy he is 改错 what is that boy?he is my brother?改错 That boy is a little ( ) 改错 1 Shanghai is the biggest city ,that has a population of more than ten million2As you know it,the earth goes around the sun3this is the boy his handwriting is the best in our class it is believed that that the little boy saved a dog She says(A) Tom is(B) a good boy,but I don't think(C) that(D).改错 It reveals the plain fact that he is a boy,isn't it?这句话对么? Bob is a boy.Her pen is here.(单句改错) Bill is form America,he is a America boy.改错