Questions:

（ 1 ） How many children do Mr. and Mrs. Green have?
（ 2 ） How did Mr. and Mrs. Green solve the problem cleverly?

Mr. And Mrs. Green have five children. They like to eat fruit very much. But each person likes a different fruit.
Betty likes apples. Such like eating watermelon. Ben enjoys eating bananas. Bill likes coconuts and Ann enjoys mangoes. 
So every day it's hard for Mr. And Mrs. Green to buy fruits for them. One day Mr. And Mrs. Green said to the children.
“Now we want to give each person a day to choose his or her favourite fruit. Then other will eat that fruit too. Do you agree?”
“Yes.” Said Ann. “But what about Saturdays and Sundays?” “On Saturday your father chooses his favourite fruit.”
“So you will choose your favourite fruit on Sunday?” “That's right.” Said the mother. “Is that OK?” “ Yes! Yes! Yes!” Everybody shouted.

Practise:
How many…?
What do …?
What did …?
Which day is for…?