You know Australia is a big country, but you may not know how easy it is to __________.
One of the greatestof unhappiness,in my experience,is the difficulty we have in accepting things as they are.
Everyone present at the meeting agreed to stick to the ________that everyone should be treated fairly.
Education reform,the Chinese government attaches great importance,has attracted a lot of public attention.
We cannot be about our work.Any small mistake may lead to a serious accident.
It was_________ back home after the experiment.