Some cake a cake что поставить some или a

Cake - исчисляемое существительное. Поэтому a можно ставить спокойно.

Смотря где это надо поставить. Напиши по конкретнее

1)I played different games 

    Who played different games?

    I played different games , didn't I?

    

2)Kate and Mary went to the cinema yesterday

   Did Kate and Mary go to the cinema yesterday?

   Kate and Mary went to the cinema yesterday, didn't they?

 

3)The weather was bad last week

    Was the weather bad last week?

    When was the weather bad?

 

4)Ted met his best friend in 2004

    Did Ted meet his best friend in 2004?

    When did Ted meet his best friend?

 

5) I saw him yesterday

    Who saw him yesterday?

    I saw him yesterday, didn't I?

Dogs are able to perceive the world through the eyes of man. British researchers found that the dogs steal food four times more likely if the room is dark enough to view cheloveka.Eto may indicate that the animals are able to change their behavior, taking into account of the behavior of their hozyaev.Eto study was conducted in experimental studies sobakah.Tselyu was to try to determine whether dogs are able to understand what is perceived to be the reality of their owners. Scientists have discovered that when the room light is extinguished with the dogs, the likelihood that the dog will try to steal the forbidden food for them, increased in four raza.Sotrudnitsa department of psychology, said that the study shows that dogs understand that people do not see them in the dark and they are able to assess the situation from the point of view of the person.