48. She wouldn't have found out about it if he hadn't told his sister.
49. He would have time with her if he had known how unhappy she was.
50. I would have seen her again if I hadn't lost her phone number.
51. We would still be living together if she hadn't gone away to university.
52. She would understand if she had taken the trouble to find out why.
53. If he wouldn't behave badly, he wouldn't have been punished.
54. I will not complete the work unless you pay me $500 extra, said Frank.
55. I would appreciate it if you could get the work to me as soon as possible.
56. The union claims its members will not return to work unless the company agrees to a meeting.
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