After the captain left, his assistant Roger and other members of the team stayed behind to _____ any misunderstanding, but they refused to hear complaints(抱怨).
If someone has an accident and can no longer walk, scientists might be able to use stem cells to ___ the damaged cells and allow that person to walk again.
---Nowadays more and more people move to cities because there are better job opportunities. ---I don’t agree. Most of them remain unemployed, cannot afford housing and eventually __ living in poverty.