请根据下面短文回答第66～70题：
One day Jack’s wife was cleaning the house.
"Look at all these umbrellas (雨伞) ," Jack’s wife said to him. "There are eight and they are broken."
"I’ll take them all to the umbrella shop. Maybe the workers there can mend them, "Jack said. "They are too good to throw away."
Jack took the eight umbrellas to the shop and left them there. "They’ll be ready tomorrow, "the shopkeeper said.
That evening Jack went home from the office by bus as usual. He sat next to an old woman. She had a red umbrella on the floor near her.
When the bus reached his stop, he picked up her umbrella and stood up.
"Hey!" the woman said. "That’s my umbrella."
"I’m sorry, "Jack said, giving it to her. "I wasn’t thinking. Please forgive(原谅)me."
The next day he took the umbrellas from the umbrella shop and got on the bus.
As he sat down, a woman behind him said, "You have certainly had a successful(成功的)day!"
He turned around and saw the woman he had seen the day before.
How many umbrellas were there in Jack’s home