Tom is playing basketball at the moment. Pr. Continues
Tom plays… Pr. Simple
My friends are going… Pr. Continues
My friends go… Pr. Simple
I visit my… Pr. Simple
My parents and I have been living… Pr. Perfect Continues
I'm visiting… Pr. Continues
I know Fred for 3 years. Pr. Simple
I'm watching… Pr. Continues
I watch… Pr. Simple
I have watched… Pr. Perfect