¿qué oraciones son ciertas sobre el gobierno de cuba? cuba es una democracia. el gobierno de cuba practica el comunismo. el gobierno de cuba tiene mucho control sobre lo que compra la gente.

Option 1 and 3

Explanation: The question is:

Which sentences are true about the government in Cuba?

the first sentence says:

1) Cuba is a democracy:

This is kinda true, in Cuba there is a "People's Democracy", which is a form of democracy that points towards the socialism, so yes, Cuba is a democracy, but not the same democracy that you may find in the US.

2) Cuba's government practices the communism:

Not really true, Cuba is actually socialist, which is a step to communism, but not exactly that.

3) Cuba's government has a lot of control over the things that people buy.

This is true, there are some objects that may shorten in some periods, and the government needs to control the distribution of them.