Use the correct form of the present simple or the present perfect simple to complete the sentences.
1. I`ve just read (read) an interesting article about the special abilities of "autistic savants".
2. Stephen Wiltshire _________ (paint) beautiful pictures since he was eight.
3. About 10% of children diagnosed with autism ________ (show) some special talent.
4. There`s an Australian autistic savant, Daniel T, who speaks seven languages, and ________ (create) his own language.
5. Scientists ________ (study) Daniel`s talents for some time with great fascination.
6. When he is not working, Daniel _________ (love) hanging out with friends.