Составить новые предложения. Последовать примеру.
It is easy to keep turtles - Turtles are easy to keep
It is difficult to teach kittens tricks -
It is fun to play with puppies -
It is interesting to teach parrots to talk -
It is pleasant to watch hamsters -
It is useful to keep horses -

2. Kittens are difficult to teach tricks. 3. Puppies are fun to play with. 4. Parrots are interesting to teach to talk. 5. Hamsters are pleasant to watch. 6. Horses are useful to keep.