Viết lại câu cho hoàn chỉnh
1.teenagers / on / Nowadays / more / past / rely / the / than / technology / in
2. first / farm work / trip / countryside / I / had / experience / my / of / on / the / a / to
3. all / a computer / problems / sitting / in front of / health / day / cause / can
4. minorities / still / traditional / some / life / in / ways / mountains / their / the / keep / of