5 предложений! Поставьте выделенные существительные во множественное число, произведя все необходимы изменения
1.I lost my book. 2. This is an English dictionary. 3. Put the box on the shelf. 4. The last leaf fell from the tree. 5. The speech was very interesting.

сомневалась насчет артиклей как раз ((

1. I lost my books.2. These are English dictionaries.3. Put the boxes on the shelves.4. The last leaves fell from the tree.5. The speeches were very interesting.