Approximately 350 million people speak English as their first language. About the same number use it as a (17)__________ language. It is the English language that is used as the language of aviation, international sport and pop music. 75% of the world mail is in English, 60% of the radio station (18)__________ in English and more than half of the world’s periodicals are printed (19)__________ English. It is the English language that is used as an (20)__________ language in 44 countries, and as the language of business commerce a technology in many others. English is now an effective medium of international communication. (21)__________, it is the written English, which is not systematically phonetic, that causes difficulties (22)__________ foreigners.