help me pls Rewrite the sentences, using the present perfect or the present perfect continuous. 1. I started discussing my research proposal with my professor at the beginning of my course. We're still discussing it. → ______________________________________________________________________________ 2. Nam's still studying English. He started studying it two years ago. (for) → ______________________________________________________________________________ 3. I started learning how to play the piano eight months ago. I'm still learning it. → ______________________________________________________________________________ 4. He attended two online vocational courses: one in 2012 and the other in 2013. (twice) → ______________________________________________________________________________ 5. They visited this college in 2009, 2012 and 2014. (three times) → ______________________________________________________________________________ 6. The British Council established IELTS a long time ago. It still uses this test as an international standardised test of English for non- native English language speakers. (for) → ______________________________________________________________________________ ______________________________________________________________________________ 7. She started her research project last month. She's still doing it. → ______________________________________________________________________________ 8. The university started building a new campus in May. They are still building it. (since) → ______________________________________________________________________________ 9. The graduate students started arriving at four o'clock. They are all in the lecture hall. → ______________________________________________________________________________ 10. Mary is staying at a homestay during her undergraduate programme. The programme began three weeks ago. (for) → ______________________________________________________________________________