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.

________, the idea of having to workunder a woman defeated him

They came to the conclusion ________ by a computer.

Why are you so late— I was on half the way when it ____ to me that I had left my notebook home, so I had to fetch it.

Siberian Tigers ________ and killed at such a speed that they will disappear from the earth in the near future