学进去

   One dark night, two blind men were going home from work.“I need to buy some ________ ,” said one of them suddenly.

“OK” replied the second man, “I think I’ll buy two or three pairs for ________, too.”

In the shop, the salesgirl asked them, What size do you wear, sir, and what color would you like?”

“Size eleven. Give me one pair of black socks and two pairs of white, please, ” answered one of them.

“And you, sir?” the salesgirl asked ________ customer.

“ The same for me. I wear size eleven, too. And the same color the same ________, ” said the second blind man.

A moment later they were back in the ________ streets. But just then, a boy riding a bicycle bumped into（撞上）them. The blind men dropped all the socks on the ground! All the six pairs— black and white all mixed up. The boy quickly said sorry and left. The two blind men ________ all the socks, but couldn’t tell which were black and which were white. ________ could they be sure that each of them got one pair of black socks and two pairs of white?

They tried to ask for help. But ________ else was in the streets.

One of them soon ________ the problem. Can you guess how he made it?

They separated each pair of socks and both took one sock ________ each pair. When they got home, each of them had two black socks and four white ones—just what they wanted. Weren’t they smart?