Преобразуйте следующие предложения в форму множественного числа. 1.this factory is very big. 2.there is a desk in this classroom. 3.she has a beautiful dress. 4.that gentleman knows my brother. 5.this girl isn't my niece. 6.that table is made of wood, 7.an apple isn't a vegetable. 8.there was a pen on this table. 9.this man was a student last year. 10.is that sheep your? 11.this cat caught a mouse. 12.that game isn't interesting.