After a careful survey about the cause of the newly-built bridge, they finally came to a(n) _________ that it was due to the heavy rain.

Just a month before the earthquake the school practiced an emergency drill showing the children how to ________ find their “safe place”．

What great trouble the boy _____his father to give up smoking!

It turned out that she won the first prize in the competition, which was beyond her         .

From his ______ look, we could see the boy was ______ of the     stranger.