4. Complete the text with the correct forms of the words in brackets and appropriate time expressions.
Saved by a tweet? Can modern technology save old languages? A lot of traditional languages ¹ 1 have already become (already / become) extinct, and many more (be) in danger. A few years ago, American professor Kevin Scannell decided to start a website called Indigenous Tweets. 3 2011, a computer (search) 2 program 4 Twitter for tweets in endangered languages. It 5 (then / put) speakers of these languages in contact with each other so they can chat together. The website 6 7 and it 8 (be) in use nearly ten years now (already / help) a large number of people to communicate in their own languages, including indigenous North and Central American languages like Lakota and Nawat.
