Question

New materials for packaging the foodstuffs……….. for prolonged storage.

Выберите один ответ:
a. are making
b. have been made
c. will made
d. has made

Answer 1

Have been made (i think so)

Answer 2

New materials for packaging the foodstuffs……….. for prolonged storage.

Выберите один ответ:

a. are making

b. have been made

c. will made

d. has made

New materials for packaging the foodstuffs have been made for prolonged storage.

Для длительного хранения пищевых продуктов созданы новые  упаковочные материалы.