Помогите пожалуйста!!! The ________________ of the telephone give people an opportunity to talk to their friends who live very far

Question

Помогите пожалуйста!!! The ________________ of the telephone give people an opportunity to talk to their friends who live very faraway from them.

Гость

Ответ(ы) на вопрос:

Accepted Answer

Точно не уверена, но может быть number?