I failed in the final exam last term and only then ______ the importance of studies.
_______ to be much chance of our catching him up in the near future.
Modern science and technology has ______ communication between people far apart.
When _____ his view about his job as a teacher, Mike said he found it very interesting and rewarding.
What impressed the visitors deeply was ______ the workers made with their hands.
To our great relief, ______ time going on, more and more of the victims of the earthquake were rescued.