When a person immigrates to another country, he should_ (conscious) adapt himself to the new environment

The teacher required that all errors should be _______eliminated before the students turn in their term paper

In studio recordings, new techniques made possible effects that not even an electronic band could produce .

_______(safe)needs to be improved on the railways in that country

In August 1977, a satellite to gather data about the 10 million black holes which are thought to be in the Milky Way.