Somehow, the old man had ________ a dangerous secret, one which could not be discussed in a room on a military base.
That was the first impression she ___ us when she first gave us an English lesson.
At the railway station, the mother waved goodbye to her daughter until the train was ___.
We were ___ to leave our homes because of the flood.
Health problems are closely connected with bad eating habits and a ___ of exercise.
Although this phenomenon can’t be understood, it can be ___ in fact.