- Ung dung vua hoc vua choi danh cho tre em, va nhung ai yeu thich.
- Ung dung bao gom nhieu chu de khac nhau de cac be chon lua
- Tuy vao tung chu de se co cau hoi phu hop khac nhau.
- Nguyen tac choi la su dung von ngoai ngu, cach nhin cua minh de tim dap an dung nhat.