1.=> Urgent actions must be taken to help the victims of the earthquake in Mexico.
2.=>You should not have allowed your 16-year-old son to drive your car.
3.=> Under no circumstances will / shall I lend John any money.
4.=> It has been suggested that income tax (should) be abolished.
5.=> If you had not reminded me about the timetable, I would have missed the last train.