2. He cannot afford a new computer. A. The new computer is so expensive that he cannot buy it. B. Therefore, he would buy a new computer. C. So, he would buy a new computer. D. The new computer is so expensive but he can buy it. 3. I first started to play the guitar when I was sixteen. A. I have played the guitar when I was sixteen. B. I have started the guitar when I was sixteen. C. I have started the guitar since I was sixteen. D. I have been playing the guitar since I was sixteen.