Present simple 07

Choose the correct form of the verb be,

Cindy _____ sad.

Samuel and Daniel _____ brothers.

I _____ sick.

We _____ friends.

Casey and I _____ at the office.

The students _____ in the classroom.

She _____ a manager.

Ray _____ in the shower.

They _____ at home.

The dogs _____ beautiful.