Isthisyoursistersrul的精选

问题详情：句型转换1．Isthisyoursister'sruler？(作否定回答)________，________________．2．Arethoseherbooks？(作肯定回答)________，________________．3．Isthathisbox？(改为复数句)________________his________？4．Isthatyourruler？(...