Last night, when Jack phoned me, I _____ a letter.

[a] Thanks to this, people may have a better living condition than those who know nothing about foreign languages.

[b] In conclusion, under no circumstances should we refuse to learn foreign languages thanks to the benefits mentioned above.

[c] Secondly, people can also broaden their mind by reading books or watching news in different languages to be well-informed about the world.

[d] Nowadays, learning foreign languages is extremely necessary for almost everyone in modern life.

[e] Firstly, being good at foreign languages, people can work and communicate with foreigners as well as having more job opportunities for themselves.

The application of technology in the school will _____ self-learning.