11. If he hadn't been so ill , he wouldn't have been absent from class yesterday.
12. If Jack hadn't worked too hard , he wouldn't have felt tired
13. If he hadn't got a traffic jam , he would have come to the meeting on time
14. If he had not cheated in the exam , he wouldn't have got a punishment.
15. If it hadn't been for its expensiveness , I could have bought that watch
16.If Nam had been at home , he would have answered my phone.
17. If the girl hadn't been ill , she wouldn't have cried a lot
18. If it hadn't been for his bad school report , he wouldn't have been happy.
19. If it hadn't been for their carelessness ,my students wouldn't have got bad marks
20. If Mr.John hadn't eaten too much meat , he wouldn't have been fat.