Having worked abroad for five years, he _________ much experience in dealing with international affairs.
A big earthquake broke out in Japan on March 11th 2011, _________ in many deaths and injuries.
As there is less and less coal and oil, scientists are exploring new ways of making use of ____ energy, such as sunlight, wind and water for power and fuel.
In the future, senior citizens will be able to go anywhere using high-tech cameras _______ to their head.
As he works in a remote area, he visits his parents only ______.
Don’t mention that at the beginning of the story, or it may _____ the shocking ending.