你可以先写作业，或先吃饭，都可以。

Nǐ kěyǐ xiān xiě zuòyè, huò xiān chīfàn, dōu kěyǐ.

You can do your homework first or eat first, both are fine.

周末我们可以去公园，或在家看电影。

Zhōumò wǒmen kěyǐ qù gōngyuán, huò zài jiā kàn diànyǐng.

On the weekend we can go to the park, or stay home and watch a movie.

你可以坐地铁，或是坐公交车去学校。

Nǐ kěyǐ zuò dìtiě, huòshì zuò gōngjiāochē qù xuéxiào.

You can take the subway or take the bus to school.