二、按要求改写下列句子
问题描述：
二、按要求改写下列句子
1.Is,an,Mary's,bag,there,English,in,book(连词成句）
___________________________________
2.Is this a book?(用a box改为选择疑问句）
Is this a book______ _______ _______?
3.are,your,polite,new,and,all,friends,helpful(连词成句）
____________________________________
4.他们不是我们的同班同学,他们在3班.
They______________.They are in Class 3.
答
1.There is an English book in Mary's bag.
2.Is this a book or a box
3.Your new friends are all polite and helpful.
4.They are not our classmates .They are in Class 3.