20、Mrs. Green is an English woman．She teaches English well．Her English classes are very interesting．

Mrs. Green has two children-Tom and Mary．Tom is seven and his sister Mary is four．Tom goes to school but Mary doesn't．Tom has two volleyballs, five baseballs, a tennis ball, a tennis racket and a baseball bat．But Mary has only one volleyball, a baseball and a tennis ball．She doesn't have a racket．Tom plays sports with his friends every day．Mary doesn't do sports．She only plays with the ball．

1．Mrs. Green is             ．

A．an English teacher        B．an English worker       C．a Chinese teacher

2．How many sons does Mrs. Green have?                 

A．three                     B．two                     C．one

3．Mary doesn't go to school because                  ．

A．She is interesting           B．She is seven            C．She is only four

4．Tom has              balls．

A．eight                      B．seven                    C．five

5．Mary has          balls．

A．two                       B．three                     C．only one