Answer:
B. thorough
Explanation:
When a plane went down they mounted <u>extensive</u> searches and almost always they found the plane within a day or two.
Sutton Hoo is the ship burial. I am not sure about the others. I will try to figure it out though.
This paragraph is stating that no matter who, or what you are, we all come from the same blood and live on the same earth.
Edmund Kells constructed his own x-ray machine.
