To be for I/you/he/she/it

I ___ at the park now. (+)

She ___ good at mathematics. (-)

You ___ a good student. (+)

___ it difficult to solve this problem?

I _______ late for the meeting. (-)

___ you OK?

__ she ready to start the project?

___ I the last one on the list?

It ___ time to go home. (+)

I ____ afraid of speaking in public anymore. (-)