British pop stars are famous all over the world. сделайте это предложение в паст симпл, презент симпл, фьюча симпл; со спецальным вопросом и общим

Past simple: British pop stars were famous all over the world.

Present simple: British pop stars are famous all over the world.

Future simple: British pop stars will be famous all over the world

С общим вопросом: Are British pop stars famous all over the world?

Со спец. вопросом: Why are British pop stars famous all over the world?