【单选题】There are two groups of children with same age and number. They are required to exercise ten minutes everyday. The only difference is that group A can receive candy and group B have nothing, What woul...
【简答题】A Clever Bird A man has a bird. It is very clever. Every day the man speaks to the bird.“Hello!”he says. “Hello!”the bird answers.“What are you doing?”says the man.“What are you doing?”says the bird. ...