Поставьте следующие предложения во множественное число, произведя нужные изменения.
1. There is a new shop in our street.
2. I do not know that gentleman.
3. Who is this lady?
4. This book is very interesting but too short.
5. My grandmother has a cow, an ox and a sheep.
6. 1 need to buy a new shelf.
7. I will add a tomato and a pepper in the salad.