1. You'll have an accident if you don't drive carefully.2. She should work hard if she wants to pass her Maths test.3. You should have got there early if you wanted a good seat.4. Can you speak louder, please? We can't hear you at the back.5. There's been an accident. Come as quickly as you can, please.6. I caught a taxi because if I had come by bus, it would have taken me much longer.7. We need to save time and money - so can we all try and work efficiently?8. 'I'm fed up with staying in all the time.' 'Well, go out oftener.'9. The nearer I got to getting a job was being short-listed.10. His parents are worried about him because his marks are getting worse.