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.
(реламируя)

ADVERTISE

B5

While he was driving the last nail into the post, he felt a tug on his overalls and saw a little boy.
(past continuous, т.к. два действия происходят параллельно. Когда он вбивал, он почувствовал)

DRIVE

B6

‘Mister,’ he said, ‘Do you want to sell your puppies? I would like to choose one.’
(present simple, т.к. cлово want не используется в continuous)

WANT

B7

As the dog made their way to the fence, the little boy chose a small puppy hobbling behind the others.
(past simple,т.к. говорится об определенном времени в прошлом.

CHOOSE

B8

‘Son,’ said the farmer, ‘if you by that puppy, he will not be able to run and play with you like these other dogs.’
(1-й conditional)

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.
(past simple passive, т.к. действие происходит в определённый момент в прошлом. Также, он был прикреплён, а не сам прикрепил ч.л.)

ATTACH

B10

He said, ‘You see sir, I cannot run well myself, and he will need someone who understands.’
(я сам не могу бегать хорошо)

NOT CAN