单项选择题

B 根据下面短文回答下列问题。 "Joe," said" his mother, "please go to the shop and buy some eggs. Be sure not to buy any bad ones." Half an hour later Joe came back with a yellow box. His mother took the box over and opened it. "Oh," she said, "What is it" "Eggs, of course!" Joe said, "I broke (打破) them all. Every one is good."

All the eggs were good when Joe bought them.