Julie was good at German, French and Russian, all of ______ she spoke fluently.
John invited about 40 people to his wedding, most of ______ are family members.
(2013·辽宁卷)He may win the competition, he is likely to get into the national team.
We have launched another man-made satellite, ______ is announced in today’s newspaper.
Nowadays people are more concerned about the environment _______ they live.
There is no simple answer, _____ is often the case in science.