求短文改错、答案Dogs are one of the pet animals,most of them are liked by people.They are very usefui.When you are in troubles,it can heip you.For example,in the North Pole,when youwant to go out to do something,you must take a sledge pulling

求短文改错、答案Dogs are one of the pet animals,most of them are liked by people.They are very usefui.When you are in troubles,it can heip you.For example,in the North Pole,when youwant to go out to do something,you must take a sledge pulling 短文改错求答案 求短文改错答案! 短文改错求答案 英语短文改错求答案 求英语短文改错答案 高中英语短文改错 求答案! 求短文改错的答案 短文改错的答案. 求这篇短文改错答案, 短文改错求大神 求短文改错 短文改错求大神 求改错英语短文. 求短文改错 求英语短文改错 短文改错,求改. 短文改错 求详解