Anxiety is anxiety not anxiaty. Hope this helps :)
The lines from "The Tragedy of Macbeth", by William Shakespeare, that would support the answer to the question of why Malcolm and Donalbain feel they need to leave Scotland <em>C. Where we are,/There's daggers in men's smiles. The near in blood,/The nearer bloody</em>. Malcolm and Donalbain are King Duncan's sons. Their father has been murdered. They decide to go one to Ireland and the other one to England. In Scotland, they don't feel safe.
The prisoner is shot because the act of shooting a prisoner is near instantaneous. The action has no duration that would justify the use of the present participle, unless it were an order that had been given and were still to be carried out. Bombing raids over the third reich could go on for hours at a time and be carried on over consecutive nights, so the factories are being bombed. Think of it like this, the decision to shoot the prisoner could be taken, the order given and carried out - and even the mess probably cleaned up - but still during all this while the factories could quite feasibly have been being bombed, continuously, and without respite. Eventually the factories would either cease to exist altogether, or the bombing would cease and the shell-like structures would have simply been bombed.
Hope I can help!