To be good at + subjects

I ... (to be) good at English.

I ... (not to be) good at Science.

She ... (not to be) good at PE.

We ... (not to be) good at Music.

He ... (to be) good at Maths.

They ... (to be) good at Social Studies.

You ... (to be) good at Russian.

My cousin ... (not to be) good at Computer Studies.

My friends ... (not to be) good at Art.

My teacher ... (to be) good at English.