Привет! Давай разберём предложения вместе.
came (пришли) – "all afternoon the children came and went."
did (делала) – "How often did you watch TV?"
was (была) – "the whole pizza he was amazed..."
took (взял) – "Sarah took a deep breath..."
catch (поймать) – "Mr. Johnson catch her..."
had packed (упаковала) – "her mother had packed them..."
was leaving (уезжал) – "the train was leaving."
had sold (продала) – "he had sold six tickets..."
was already beginning (уже начинался) – "in less than six hours she was already beginning..."
blew (унесло) – "off the ladder yesterday it blew."
were building (строили) – "it was the biggest building they were building."
Если есть вопросы или нужно ещё что-то объяснить, дай знать!