In each pair of sentences choose the most a Propriate sentence ending (a or b). 1. l've run a) a long way. 2. I've been running b) and I really feel very tired. 3. I've visited London a) since I was a student and I've always liked it. 4. I've been visiting Londone) once or twice before. 5. We've stayed a 6. We've been staying b a) in this hotel a couple of times. b) in this hotel for a week already. 7. Dad's asked me a 8. Dad's been asking me b a) to help him today. b) to help him since morning. 9. They've made a 10. They've been making a) five films since they got into the business. b b) good films ever since they left college.