probably feel healthier (take; took).
2.If I … the job, I think I will take it. (am offered; were offered).
3.You’ll catch the train if you … before ten (leave; left).
4.You … to operate it properly if you knew the design of the motor.
5.I … on holiday this summer if I had enough money.(will go on; would go on).
2. am offered
5. would go