Answer:
Not gonna write an essay here nor do I have access to your text. But:
Taking antibiotics with a broad spectrum range kills the normal flora found in your body. This puts you at a greater risk for infection.
Also, misusing antibiotics when we have no specific target to kill (like Staph. Aureus) is what has lead to increased genetic restance of antibiotics by microorganisms.
Amnesia is the inability of the person to remember or recall stored information in one's memory. A person can acquire amnesia through brain illnesses or through injury. From the given situation above, when one of the main characters is thrown from a galloping horse and suffers from the amnesia, the type of amnesia he/she is having is called an Organic Amnesia. This kind of amnesia is caused by brain damage due to injury.
The answer would be truck, and trip