| Present Perfect Continuous | Present Perfect |
|---|---|
| 1 You've been designing solar racing cars for a long time. | 5 I've designed five or six different cars so far. |
| 2 I've been taking part in races for about four years. | 6 How many races have you taken part in? |
| 3 I've been building a new car with a team from Queensland University. | 7 We've built a prototype of a car called 'Rainbow'. |
| 4 You've been writing a book about solar cars. | 8 I've only written the first few chapters. |