题目内容
There are ___ floors in the building and he lives on the ____ floor.
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____of the apples in the fruit bowl are soft and sweet.
A UN report says that the world population will pass six billion by the end of ____ century.
-How old is your daughter?-_________. We had a special party for her _________ birthday last week.
--- Do you mind telling us something about this area?--- Not at all. ________ of the land in this area _________ covered with trees and grass.
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