Question

2 oraciones con "can"2 oraciones con "can't"2 oraciones con "could"2 oraciones con "couldn't"

Answer 1

you can swimming in the sea
you can play football on Fridays
you can't play tennis tomorow
you can't play basketball in the morning

Answer 2

Oraciones con could

they could invent a new prototype

they couldn't invent a new prototype

could they invent a new prototype?

Yes , they could

No , they couldn't