i have a QQ group number is 32158854,many students and teachers change their papers there,you can join us,please give us a indicate when u ask for joining ,like 'buy paper'or 'sale paper'
i have a QQ group number is 32158854,many students and teachers change their papers there,you can join us,please
give us a indicate when u ask for joining ,like 'buy paper'
or 'sale paper'