When a new disease breaks out, experts must __________ what to do in the fastest way.
Bill was doing a lot of physical exercise to build up his_____.
In the spring of 2003, when SARS spread all over the country, people____a panic.
After reading a book or a magazine in the reading room , put it back_____it was.
Only with this method_____to make progress in your maths study .
The best way for starting a person’s breathing is to use______way