Упражнение 31. Расскажите о цирковом представлении. Употребите глаголы «to be» и «to have» в нужной форме.
A traveling circus was visiting a little town. Among the attractions were some dogs. Each dog ... to show a trick. One dog ... to pretend that it could count, another dog ... to ride a bicycle. At the end of the performance they showed a dog, Fray by name, who could play the piano. Fray was the chief attraction, and before it began its trick, the manager always stood up and said: "And now, boys and girls, you ... to be very quiet. Fray, our greatest artist ... to play the piano". The dog sat on a chair, put its paws on the piano and seemed to play it. One day during the performance Fray started to play the piano as usual. Suddenly one of the boys shouted loudly: "Rats". Immediately "the artist" jumped off the chair and rushed in the direction of the cry. And here everybody burst out laughing - the piano continued to play.

A traveling circus was visiting a little town. Among the attractions were some dogs. Each dog had to show a trick. One dog had to pretend that it could count, another dog had to ride a bicycle. At the end of the performance they showed a dog, Fray by name, who could play the piano. Fray was the chief attraction, and before it began its trick, the manager always stood up and said: "And now, boys and girls, you have to be very quiet. Fray, our greatest artist have to play the piano".

Так получается?

да но там и be надо поставить и поэтому мне кажется что гдаголы можно изменять и тогда все по другому будет