Unit 3 A Healthy LifeGrammar - the usage of “it”For the Dog The family seated in a restaurant had finished their dinner when the father called over the waiter. “Yes，sir？” the waiter asked. “My son has left quite a lot of meat on his plate，”explained the father，“Could you give me a bag so that I can take it it home for the dog？” “Gosh，Dad！”exclaimed the excited boy，“Have we got a dog then？”It is never too old to learn.活到老,学到老。It is no use crying over spilt milk. 覆水难收。 It is easier to say than to
