Помогите с английским пожалуйста: Fill in the gaps with the present…

Помогите с английским пожалуйста: Fill in the gaps with the present perfect or past simple of the verbs in brackets.1. The Welsh language … (be spoken) for about twelve centuries already.2. The Manx language… (be spoken) on the lsle of Man up to the end of the 19th century.3. A hundred and twenty- five Native American languages … (disappear) up to now.4. Bruce Connell… (return) to Cameroon, but Bogon, the last speaker of Kasabe, had died.5. Pre- Columbian people… (return) 300 languages at the time Columbus Landed in America.6. Of the 175 or so languages recorded across the Rossian Federation, about half a dozen… (by now/ come) to the edge of extinction.7. When… the tribe council… (decide) that it would not develop a written form of the language? 8. Linguists found that only 500 Kets, north- west Siberian peopie,… (speak) their own language competently in 1993.