Complete the text with the passive or active form of the verb given: Today, Post-it Notes (a) ______ (find) everywhere. Thousands of different Post-it products (b) ______ (use) around the world right now. For example, many students often (c) ______ (put) them in their text books to mark important pages of information. Did you know that they (d) ______ (invent) by accident? Dr Spencer Silver, a scientist at 3M, (e) ______ (make) a type of glue that wasn’t permanent. His discovery didn’t seem very useful at the time. Six years later, Art Fry had the idea to use the adhesive on paper as a bookmark. The Post-it Note (f) ______ (introduce) in the US in 1980. Since 1980, millions of notes (g) ______ (sell) all around the world. A famous fashion designer called Ashley Isham even (h) ______ (design) a dress which (i) ______ (inspire) by Post-it Notes. Who knows? Maybe one day Post-it Note dresses (j) ______ (be) available to buy in the shops!

Today, Post-it Notes are found everywhere. Thousands of different Post-it products are being used around the world right now. For example, many students often put them in their text books to mark important pages of information. Did you know that they were invented by accident? Dr Spencer Silver, a scientist at 3M, made a type of glue that wasn’t permanent. His discovery didn’t seem very useful at the time. Six years later, Art Fry had the idea to use the adhesive on paper as a bookmark. The Post-it Note was introduced in the US in 1980. Since 1980, millions of notes have been sold all around the world. A famous fashion designer called Ashley Isham even designed a dress which was inspired by Post-it Notes. Who knows? Maybe one day Post-it Note dresses will be available to buy in the shops!

Пассивный залог используется, когда важнее действие над предметом или результат: are found, are being used, were invented, was introduced, have been sold, was inspired. Активный залог используется, когда назван исполнитель действия: put, made, designed, will be.