1. Exercise (which is) taken regularly improves the fitness of our body and mind.
2. Economic reforms is one of the most important measures to be taken/ (which is)
taken/ to promote the development of a country.
3. Sleeping in the next room, the boy was wakened by the sound of breaking glass.
4. Never put off until tomorrow what you can do today.
5. Many people say (that) the most common way of attracting/ to attract someone's
attention is by waving.