1. to plan 2. to understand 3. to cost 4. to improve 5. to exercise
1. Henry has worked out a plan how to win the competition. 2. Being so subtle, she was able to give birth to 3 children - I can't work it out. 3. A complete renovation of the flat is going to work out very expensive. 4. I'm sure you will achieve a great success, everything will work out. 5. If she wants to keep fit, she will have to work out regularly.