B4

A farmer had some puppies he needed to sell.

He painted a sign advertising the pups and set about nailing it to a post on the edge of his yard.

ADVERTISE

B5

While he was driving the last nail into the post, he felt a tug on his overalls and saw a little boy.

 DRIVE

B6

'Mister,' he said, 'do you want to sell your puppies? I would like to choose one.'

 WANT

B7

As the dogs made their way to the fence, the little boy chose a small puppy hobbling behind the others.

 CHOOSE

B8

'Son,' said the farmer, 'if you buy that puppy, he will not be / won’t be able to run and play with you like these other dogs.'

 NOT BE

B9

The little boy rolled up one leg of his trousers and showed the farmer a steel brace running down both sides of his leg, which was attached to a specially made shoe.

 ATTACH

B10

He said, 'You see sir, I cannot / can’t run well myself, and he will need someone who understands.'

 NOT CAN