The government has decided to build a modern cinema___ many migrant workers live.
.–How did you know the surprising news?–I happened ______ the event then.
.The house caught ______ fire while they were away. It must have been set ______ on fire by someone.
._______ the argument sounds reasonable, it still needs support of evidence.
..Modern China is experiencing a completely new period ______ respect for science and creativity has become the guiding principle of the society.
.Britain, ______ many other industrialized countries, ______ major changes over the last 100 years.