Question

Составить 5 предложений в пассивном залоге по тексту​

Answer 1

1 When was the First International Congress of Whistled languages held?

2 Where has Silbo-like whistling been found?

3 What will now be carried out in Venezuela?

4 People were allowed to communicate across great distances with the help of Silbo Gomero language.

5 When was Silbo adopted?