One day Mr. Brown sees a young woman in the street with children. He is very surprised because all the children are wearing the same clothes-white hats, blue coats and yellow trousers.

"Are all these children yours?" he asks the woman.

"Yes, they are." she answers.

"Do you always dress them in the same clothes?" asks Mr. Brown.

"Yes," answers the mother. "When we have only four children, we dress them in the same clothes because we don't want to lose any of them. It is easy to see our children among other children because they are all wearing the same clothes. And now we have ten, we dress them like this because we don't want to take other children home by mistake. When there are other children among ours, it is easy to see them because their clothes are different."

51. How many children does the woman have now?

    A. Ten.                B. Less than four.       C. Four.     D. More than ten.

52. Who is the woman?

    A. Mr. Black's wife.                       B. Mr. Black's friend.

    C. The children's mother.                    D. The children's teacher.

53. Why does the woman dress her children in the same clothes?

    A. Because she doesn't have time to buy the different clothes for them.

    B. Because she doesn't like the clothes of different colours.

    C. Because she doesn't want to take her children home.

    D. Because she wants to see her children easily among others.