It was (11) birthday． She got a letter from her uncle． "Dear Mary，"he wrote in the let-ter "Happy birthday．I’m sending you some (12)．They will arrive tomorrow．l hope you'll like them．Mary was very (13)． She liked eating eggs and chicken． "I can keep the chickens (14) Ntheir eggs or eating them， she thought．When the chickens arrived the next day，they were put in a box． She took the box off the truck and began to carry it into her garden，but the box was so heavy that she dropped(掉) (15) ．The box fell on the ground and broke open． The chickens all (16) 0ut． They ran here and there． Mary (17) hours in trying to find them．(18) few days later her uncle came． He asked，"Did the chickens arrive safely? "Yes，but I dropped the box．lt broke open and the chickens ran everywhere．(19) took me the whole morning to (20) them， Mary said．"Did you find them all? asked her uncle． "I hope so， Mary answered，"but I only caught eleven of them．"That's very interesting．l only sent you six， her uncle said with a smile．      ．

( )11．