In order to finish the experiment successfully, the professor always _________, for every day the light in his room didn’t go out until 4 a.m.
Modern science and technology has _____ communication between people far apart.
Under no circumstance _____ to tell lies to parents.
The professor said he could talk on _____ interested the audience.
It _____ quite a few years _____ the accused was declared innocent and set free.
We must remember that _____fashion is not the most important thing in ______ life.