Robbie's dog Roxy was smart. At least Robbie THOUGHT so. Robbie had found him on a street. The puppy looked cold and unhappy. Robbie took the puppy home and fortunately his mum DIDN'T MIND it. One day Robbie saw the ‘Dogs' contest’ advert. According to it, all dogs that were able to perform tricks could participate.
"I wish Roxy KNEW some tricks”, Robbie thought. “But Roxy can’t perform any.”
He decided to take Roxy to the contest anyway, not as a participant but as a viewer. There WERE lots dogs on the contest ground. The collars of some dogs WERE DECORATED with medals. The contest started, and the judge threw a ball. Roxy suddenly pulled away from Robbie and began running fast. He was the FIRSTdog to catch the ball and he didn’t forget to bring it back to the judge!
“The winner is the dog with no entry name on my list. Whose dog is this?” asked the judge.
“It’s MY dog." said Robbie. The judge handed Robbie a small symbolic medal and a certificate for free dog food.
“Congratulations! You HAVE WON!” said Robbie to Roxy and gave him a big hug.
“Let’s go home and celebrate. Mum will be surprised when she LEARNS the news.”
Правильный вариант 4.
Формула сульфата Хрома (III) — Cr(SO4)3