1. Complete the sentences with the correct word. perform promising collapsed persistent pinpoint detect wander regulations wasteful accurately 1. When John becomes bored of studying, his mind tends to …….. . 2. Scientist are pleased with the …….. results of the test. 3. Modern-day clocks allow people to ……..tell the time. 4. The explorers managed to …….. their location on the map. 5. The divers must follow strict safety …….. when diving. 6. In the future nanobots may be able to …….. operations. 7. Derreck found it …….. to throw away leftovers. 8. In order to succeed, you must be ……. and never give up. 9. A special device is used to …….. signs of heart disease in a patient. 10. A section of the building had …….. after the earthquake.