They made a scientific approach ______ the subject.
______ more and more people may refer to the Internet for up-to-minute news, the newspaper will not disappear.
---- If he had been warned, he ______ that food yesterday.---- Luckily he was sent to the hospital immediately.
The approach ______ the problem is contrary ______ our expectation.
What ______ me was that there was a ______ look on her face due to the ______ problem.
Our country ______ great changes in the last 30 years and it is no longer it used to be.