a Paddington Bear." My dad 9(PACK) his suitcase but he looked up at me at once when he heard that. He was surprised and asked me why I

Применим ПРОТОКОЛ Е.

1. Определим, какую грамматическую форму требует задание. Необходимо образовать глагол в прошедшем длительном времени (Past Continuous).
2. Исходя из контекста, нам подходит форма was packing.

В выводе приведем предложение целиком.

a Paddington Bear." My dad was packing his suitcase but he looked up at me at once when he heard that. He was surprised and asked me why I

Ответ: was packing